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Entry version 196 (16 Oct 2019)
Sequence version 2 (01 Oct 1996)
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Protein

Serine/threonine-protein kinase PLK1

Gene

Plk1

Organism
Mus musculus (Mouse)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Serine/threonine-protein kinase that performs several important functions throughout M phase of the cell cycle, including the regulation of centrosome maturation and spindle assembly, the removal of cohesins from chromosome arms, the inactivation of anaphase-promoting complex/cyclosome (APC/C) inhibitors, and the regulation of mitotic exit and cytokinesis. Polo-like kinase proteins acts by binding and phosphorylating proteins are that already phosphorylated on a specific motif recognized by the POLO box domains. Phosphorylates BORA, BUB1B/BUBR1, CCNB1, CDC25C, CEP55, ECT2, ERCC6L, FBXO5/EMI1, FOXM1, KIF20A/MKLP2, CENPU, NEDD1, NINL, NPM1, NUDC, PKMYT1/MYT1, KIZ, PPP1R12A/MYPT1, PRC1, RACGAP1/CYK4, SGO1, STAG2/SA2, TEX14, TOPORS, p73/TP73, TPT1, WEE1 and HNRNPU. Plays a key role in centrosome functions and the assembly of bipolar spindles by phosphorylating KIZ, NEDD1 and NINL. NEDD1 phosphorylation promotes subsequent targeting of the gamma-tubulin ring complex (gTuRC) to the centrosome, an important step for spindle formation. Phosphorylation of NINL component of the centrosome leads to NINL dissociation from other centrosomal proteins. Involved in mitosis exit and cytokinesis by phosphorylating CEP55, ECT2, KIF20A/MKLP2, CENPU, PRC1 and RACGAP1. Recruited at the central spindle by phosphorylating and docking PRC1 and KIF20A/MKLP2; creates its own docking sites on PRC1 and KIF20A/MKLP2 by mediating phosphorylation of sites subsequently recognized by the POLO box domains. Phosphorylates RACGAP1, thereby creating a docking site for the Rho GTP exchange factor ECT2 that is essential for the cleavage furrow formation. Promotes the central spindle recruitment of ECT2. Plays a central role in G2/M transition of mitotic cell cycle by phosphorylating CCNB1, CDC25C, FOXM1, CENPU, PKMYT1/MYT1, PPP1R12A/MYPT1 and WEE1. Part of a regulatory circuit that promotes the activation of CDK1 by phosphorylating the positive regulator CDC25C and inhibiting the negative regulators WEE1 and PKMYT1/MYT1. Also acts by mediating phosphorylation of cyclin-B1 (CCNB1) on centrosomes in prophase. Phosphorylates FOXM1, a key mitotic transcription regulator, leading to enhance FOXM1 transcriptional activity. Involved in kinetochore functions and sister chromatid cohesion by phosphorylating BUB1B/BUBR1, FBXO5/EMI1 and STAG2/SA2. PLK1 is high on non-attached kinetochores suggesting a role of PLK1 in kinetochore attachment or in spindle assembly checkpoint (SAC) regulation. Required for kinetochore localization of BUB1B. Regulates the dissociation of cohesin from chromosomes by phosphorylating cohesin subunits such as STAG2/SA2. Phosphorylates SGO1: required for spindle pole localization of isoform 3 of SGO1 and plays a role in regulating its centriole cohesion function. Mediates phosphorylation of FBXO5/EMI1, a negative regulator of the APC/C complex during prophase, leading to FBXO5/EMI1 ubiquitination and degradation by the proteasome. Acts as a negative regulator of p53 family members: phosphorylates TOPORS, leading to inhibit the sumoylation of p53/TP53 and simultaneously enhance the ubiquitination and subsequent degradation of p53/TP53. Phosphorylates the transactivation domain of the transcription factor p73/TP73, leading to inhibit p73/TP73-mediated transcriptional activation and pro-apoptotic functions. Phosphorylates BORA, and thereby promotes the degradation of BORA. Contributes to the regulation of AURKA function. Also required for recovery after DNA damage checkpoint and entry into mitosis.Phosphorylates MISP, leading to stabilization of cortical and astral microtubule attachments required for proper spindle positioning (By similarity). Together with MEIKIN, acts as a regulator of kinetochore function during meiosis I: required both for mono-orientation of kinetochores on sister chromosomes and protection of centromeric cohesin from separase-mediated cleavage (PubMed:25533956). Phosphorylates CEP68 and is required for its degradation. Regulates nuclear envelope breakdown during prophase by phosphorylating DCTN1 resulting in its localization in the nuclear envelope (By similarity). Phosphorylates the heat shock transcription factor HSF1, promoting HSF1 nuclear translocation upon heat shock (By similarity). Phosphorylates HSF1 also in the early mitotic period; this phosphorylation regulates HSF1 localization to the spindle pole, the recruitment of the SCF(BTRC) ubiquitin ligase complex induicing HSF1 degradation, and hence mitotic progression (By similarity). Regulates mitotic progression by phosphorylating RIOK2 (By similarity).By similarity2 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Activated by phosphorylation of Thr-210 by AURKA; phosphorylation by AURKA is enhanced by BORA. Once activated, activity is stimulated by binding target proteins. Binding of target proteins has no effect on the non-activated kinase. Several inhibitors targeting PLKs are currently in development and are under investigation in a growing number of clinical trials, such as BI 2536, an ATP-competitive PLK1 inhibitor or BI 6727, a dihydropteridinone that specifically inhibits the catalytic activity of PLK1 (By similarity).By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei82ATPPROSITE-ProRule annotation1
Binding sitei131ATP; via carbonyl oxygenPROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei176Proton acceptorPROSITE-ProRule annotation1
Binding sitei194ATPPROSITE-ProRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi59 – 67ATPPROSITE-ProRule annotation9
Nucleotide bindingi178 – 181ATPPROSITE-ProRule annotation4

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionKinase, Serine/threonine-protein kinase, Transferase
Biological processCell cycle, Cell division, Mitosis
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

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BRENDAi
2.7.11.21 3474

Reactome - a knowledgebase of biological pathways and processes

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Reactomei
R-MMU-141444 Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal
R-MMU-156711 Polo-like kinase mediated events
R-MMU-162658 Golgi Cisternae Pericentriolar Stack Reorganization
R-MMU-174178 APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1
R-MMU-2299718 Condensation of Prophase Chromosomes
R-MMU-2467813 Separation of Sister Chromatids
R-MMU-2500257 Resolution of Sister Chromatid Cohesion
R-MMU-2565942 Regulation of PLK1 Activity at G2/M Transition
R-MMU-380259 Loss of Nlp from mitotic centrosomes
R-MMU-380270 Recruitment of mitotic centrosome proteins and complexes
R-MMU-380284 Loss of proteins required for interphase microtubule organization from the centrosome
R-MMU-380320 Recruitment of NuMA to mitotic centrosomes
R-MMU-5620912 Anchoring of the basal body to the plasma membrane
R-MMU-5663220 RHO GTPases Activate Formins
R-MMU-68877 Mitotic Prometaphase
R-MMU-68884 Mitotic Telophase/Cytokinesis
R-MMU-69273 Cyclin A/B1/B2 associated events during G2/M transition
R-MMU-8852276 The role of GTSE1 in G2/M progression after G2 checkpoint
R-MMU-8854518 AURKA Activation by TPX2

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Serine/threonine-protein kinase PLK1 (EC:2.7.11.211 Publication)
Alternative name(s):
Polo-like kinase 1
Short name:
PLK-1
Serine/threonine-protein kinase 13
Short name:
STPK13
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:Plk1
Synonyms:Plk
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiMus musculus (Mouse)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri10090 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000000589 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 7

Organism-specific databases

Mouse genome database (MGD) from Mouse Genome Informatics (MGI)

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MGIi
MGI:97621 Plk1

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Centromere, Chromosome, Cytoplasm, Cytoskeleton, Kinetochore, Nucleus

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the ‘Pathology and Biotech’ section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Lethality: homozygous embryos do not develop beyond the eight cell stage. Heterozygous mice are healthy and fertile but frequently develop tumors, most frequently lung-invading and liver-invading lymphomas. Analysis of chromosome spreads of spleen-derived cells from 6-month-old mice show aneuploidy.1 Publication

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi82K → M: Abolishes activity. 1 Publication1
Mutagenesisi194D → N or R: Abolishes activity. 1 Publication1
Mutagenesisi206E → D: No change in activity. 1 Publication1
Mutagenesisi206E → V: Decreases activity three-fold. 1 Publication1
Mutagenesisi210T → E: Increases activity four-fold. 1 Publication1
Mutagenesisi210T → V: Decreases activity three-fold. 1 Publication1

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000865571 – 603Serine/threonine-protein kinase PLK1Add BLAST603

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section describes <strong>covalent linkages</strong> of various types formed <strong>between two proteins (interchain cross-links)</strong> or <strong>between two parts of the same protein (intrachain cross-links)</strong>, except the disulfide bonds that are annotated in the <a href="http://www.uniprot.org/manual/disulfid">'Disulfide bond'</a> subsection.<p><a href='/help/crosslnk' target='_top'>More...</a></p>Cross-linki19Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)By similarity
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei103PhosphoserineBy similarity1
Modified residuei137PhosphoserineBy similarity1
Modified residuei210Phosphothreonine; by AURKABy similarity1
Modified residuei214PhosphothreonineBy similarity1
Modified residuei269Phosphoserine; by autocatalysisBy similarity1
Modified residuei335Phosphoserine; by autocatalysisBy similarity1
Cross-linki338Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)By similarity
Modified residuei375PhosphoserineBy similarity1
Modified residuei450PhosphoserineBy similarity1
Cross-linki492Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)By similarity
Modified residuei498PhosphothreonineBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Catalytic activity is enhanced by phosphorylation of Thr-210. Phosphorylation at Thr-210 is first detected on centrosomes in the G2 phase of the cell cycle, peaks in prometaphase and gradually disappears from centrosomes during anaphase. Dephosphorylation at Thr-210 at centrosomes is probably mediated by protein phosphatase 1C (PP1C), via interaction with PPP1R12A/MYPT1. Autophosphorylation and phosphorylation of Ser-137 may not be significant for the activation of PLK1 during mitosis, but may enhance catalytic activity during recovery after DNA damage checkpoint. Phosphorylated in vitro by STK10 (By similarity).By similarity
Ubiquitinated by the anaphase promoting complex/cyclosome (APC/C) in anaphase and following DNA damage, leading to its degradation by the proteasome. Ubiquitination is mediated via its interaction with FZR1/CDH1. Ubiquitination and subsequent degradation prevents entry into mitosis and is essential to maintain an efficient G2 DNA damage checkpoint. Monoubiquitination at Lys-492 by the BCR(KLHL22) ubiquitin ligase complex does not lead to degradation: it promotes PLK1 dissociation from phosphoreceptor proteins and subsequent removal from kinetochores, allowing silencing of the spindle assembly checkpoint (SAC) and chromosome segregation (By similarity).By similarity

Keywords - PTMi

Isopeptide bond, Phosphoprotein, Ubl conjugation

Proteomic databases

Encyclopedia of Proteome Dynamics

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EPDi
Q07832

PaxDb, a database of protein abundance averages across all three domains of life

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PaxDbi
Q07832

PeptideAtlas

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PeptideAtlasi
Q07832

PRoteomics IDEntifications database

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PRIDEi
Q07832

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

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iPTMneti
Q07832

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

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PhosphoSitePlusi
Q07832

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Newborn and adult spleen, fetal and newborn kidney, liver, brain, thymus and adult bone marrow, thymus, ovary and testes.

<p>This subsection of the ‘Expression’ section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

In the thymus, levels increased during fetal development, were highest in newborn animals and decreased in the adult. In the testes, the PLK levels were higher in the adult than in prepubescent mice while in the ovary, the levels were higher in the prepubescent mice. Accumulates to a maximum during the G2 and M phases, declines to a nearly undetectable level following mitosis and throughout G1 phase, and then begins to accumulate again during S phase.

Gene expression databases

Bgee dataBase for Gene Expression Evolution

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Bgeei
ENSMUSG00000030867 Expressed in 193 organ(s), highest expression level in primary oocyte

ExpressionAtlas, Differential and Baseline Expression

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ExpressionAtlasi
Q07832 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

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Genevisiblei
Q07832 MM

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Interacts with CEP170 and EVI5.

Interacts and phosphorylates ERCC6L. Interacts with FAM29A.

Interacts with SLX4/BTBD12 and TTDN1.

Interacts with BUB1B.

Interacts (via POLO-box domain) with the phosphorylated form of BUB1, CENPU and CDC25C.

Interacts with isoform 3 of SGO1.

Interacts with BORA, KIF2A and AURKA.

Interacts with TOPORS and CYLD.

Interacts with ECT2; the interaction is stimulated upon phosphorylation of ECT2 on 'Thr-444'.

Interacts with PRC1.

Interacts with KIF20A/MKLP2 (when phosphorylated), leading to the recruitment at the central spindle.

Interacts (via POLO box domains) with PPP1R12A/MYPT1 (when previously phosphorylated by CDK1) (By similarity).

Part of an astrin (SPAG5)-kinastrin (SKAP) complex containing KNSTRN, SPAG5, PLK1, DYNLL1 and SGO2 (By similarity).

Interacts with BIRC6/bruce (By similarity).

Interacts with CDK1-phosphorylated DCTN6 during mitotic prometaphase; the interaction facilitates recruitment to kinetochores (By similarity).

Interacts with CDK1-phosphorylated FRY; this interaction occurs in mitotic cells, but not in interphase cells. FRY interaction facilitates AURKA-mediated PLK1 phosphorylation.

Interacts with CEP68; the interaction phosphorylates CEP68.

Interacts (via POLO-box domain) with DCTN1 (By similarity).

Interacts with FOPNL in later G1, S, G2 and M phases of the cell cycle; this interaction recruits PLK1 to centrosomes, a step required for S phase progression (By similarity).

Interacts with HSF1; this interaction increases upon heat shock but does not modulate neither HSF1 homotrimerization nor DNA-binding activities (By similarity).

Interacts with HNRNPU; this interaction induces phosphorylation of HNRNPU in mitosis (By similarity).

Interacts (via its N-terminus) with RIOK2 (By similarity).

Interacts with KLHL22 (By similarity).

By similarity1 Publication

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

WithEntry#Exp.IntActNotes
MeikinQ5F2C34EBI-2552999,EBI-20739301

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

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BioGridi
202250, 31 interactors

Database of interacting proteins

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DIPi
DIP-56722N

Protein interaction database and analysis system

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IntActi
Q07832, 31 interactors

Molecular INTeraction database

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MINTi
Q07832

STRING: functional protein association networks

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STRINGi
10090.ENSMUSP00000033154

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1603
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

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SMRi
Q07832

Database of comparative protein structure models

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ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

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PDBe-KBi
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini53 – 305Protein kinasePROSITE-ProRule annotationAdd BLAST253
Domaini417 – 480POLO box 1PROSITE-ProRule annotationAdd BLAST64
Domaini515 – 584POLO box 2PROSITE-ProRule annotationAdd BLAST70

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni194 – 221Activation loopBy similarityAdd BLAST28
Regioni493 – 507LinkerBy similarityAdd BLAST15
Regioni538 – 540Important for interaction with phosphorylated proteinsBy similarity3

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi337 – 340D-box that targets the protein for proteasomal degradation in anaphaseBy similarity4

<p>This subsection of the ‘Family and domains’ section provides general information on the biological role of a domain. The term ‘domain’ is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The POLO box domains act as phosphopeptide-binding module that recognize and bind serine-[phosphothreonine/phosphoserine]-(proline/X) motifs. PLK1 recognizes and binds docking proteins that are already phosphorylated on these motifs, and then phosphorylates them. PLK1 can also create its own docking sites by mediating phosphorylation of serine-[phosphothreonine/phosphoserine]-(proline/X) motifs subsequently recognized by the POLO box domains (By similarity).By similarity

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. CDC5/Polo subfamily.PROSITE-ProRule annotation

Keywords - Domaini

Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0575 Eukaryota
ENOG410XQBP LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000157752

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000248546

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q07832

KEGG Orthology (KO)

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KOi
K06631

Identification of Orthologs from Complete Genome Data

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OMAi
FEVDTWS

Database of Orthologous Groups

More...
OrthoDBi
507604at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q07832

TreeFam database of animal gene trees

More...
TreeFami
TF101089

Family and domain databases

Conserved Domains Database

More...
CDDi
cd13118 POLO_box_1, 1 hit
cd13117 POLO_box_2, 1 hit
cd14187 STKc_PLK1, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.1120.30, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011009 Kinase-like_dom_sf
IPR033702 PLK1_cat
IPR033701 POLO_box_1
IPR033695 POLO_box_2
IPR000959 POLO_box_dom
IPR036947 POLO_box_dom_sf
IPR000719 Prot_kinase_dom
IPR017441 Protein_kinase_ATP_BS
IPR008271 Ser/Thr_kinase_AS

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00069 Pkinase, 1 hit
PF00659 POLO_box, 2 hits

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00220 S_TKc, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF56112 SSF56112, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50078 POLO_BOX, 2 hits
PS00107 PROTEIN_KINASE_ATP, 1 hit
PS50011 PROTEIN_KINASE_DOM, 1 hit
PS00108 PROTEIN_KINASE_ST, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequence (1+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

This entry has 1 described isoform and 2 potential isoforms that are computationally mapped.Show allAlign All

Q07832-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNAAAKAGKL ARAPADLGKG GVPGDAVPGA PVAAPLAKEI PEVLVDPRSR
60 70 80 90 100
RQYVRGRFLG KGGFAKCFEI SDADTKEVFA GKIVPKSLLL KPHQKEKMSM
110 120 130 140 150
EISIHRSLAH QHVVGFHDFF EDSDFVFVVL ELCRRRSLLE LHKRRKALTE
160 170 180 190 200
PEARYYLRQI VLGCQYLHRN QVIHRDLKLG NLFLNEDLEV KIGDFGLATK
210 220 230 240 250
VEYEGERKKT LCGTPNYIAP EVLSKKGHSF EVDVWSIGCI MYTLLVGKPP
260 270 280 290 300
FETSCLKETY LRIKKNEYSI PKHINPVAAS LIQKMLQTDP TARPTIHELL
310 320 330 340 350
NDEFFTSGYI PARLPITCLT IPPRFSIAPS SLDPSSRKPL KVLNKGVENP
360 370 380 390 400
LPDRPREKEE PVVRETNEAI ECHLSDLLQQ LTSVNASKPS ERGLVRQEEA
410 420 430 440 450
EDPACIPIFW VSKWVDYSDK YGLGYQLCDN SVGVLFNDST RLILYNDGDS
460 470 480 490 500
LQYIERDGTE SYLTVSSHPN SLMKKITLLN YFRNYMSEHL LKAGANITPR
510 520 530 540 550
EGDELARLPY LRTWFRTRSA IILHLSNGTV QINFFQDHTK LILCPLMAAV
560 570 580 590 600
TYINEKRDFQ TYRLSLLEEY GCCKELASRL RYARTMVDKL LSSRSASNRL

KAS
Length:603
Mass (Da):68,301
Last modified:October 1, 1996 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i1B980646366EFA10
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There are 2 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A0U1RNM9A0A0U1RNM9_MOUSE
Serine/threonine-protein kinase PLK...
Plk1
196Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
A0A0U1RQ54A0A0U1RQ54_MOUSE
Serine/threonine-protein kinase PLK...
Plk1
194Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti4A → V in AAA39948 (PubMed:8099445).Curated1
Sequence conflicti15A → T in AAA39948 (PubMed:8099445).Curated1
Sequence conflicti23P → L in AAA39948 (PubMed:8099445).Curated1
Sequence conflicti27V → A in AAA39948 (PubMed:8099445).Curated1
Sequence conflicti29G → S in AAA39948 (PubMed:8099445).Curated1
Sequence conflicti41P → L in AAA39948 (PubMed:8099445).Curated1
Sequence conflicti54V → I in AAA39948 (PubMed:8099445).Curated1
Sequence conflicti495A → R in AAA39948 (PubMed:8099445).Curated1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
L06144 mRNA Translation: AAA39948.1
U01063 mRNA Translation: AAA56635.1
L19558 mRNA Translation: AAA16071.1
BC006880 mRNA Translation: AAH06880.1

The Consensus CDS (CCDS) project

More...
CCDSi
CCDS21812.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A47545
A54596

NCBI Reference Sequences

More...
RefSeqi
NP_035251.3, NM_011121.4

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSMUST00000033154; ENSMUSP00000033154; ENSMUSG00000030867

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
18817

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
mmu:18817

UCSC genome browser

More...
UCSCi
uc009joo.2 mouse

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L06144 mRNA Translation: AAA39948.1
U01063 mRNA Translation: AAA56635.1
L19558 mRNA Translation: AAA16071.1
BC006880 mRNA Translation: AAH06880.1
CCDSiCCDS21812.1
PIRiA47545
A54596
RefSeqiNP_035251.3, NM_011121.4

3D structure databases

Select the link destinations:

Protein Data Bank Europe

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PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5DMSX-ray1.90A/C367-603[»]
5DMVX-ray2.50C367-603[»]
5DNJX-ray2.30A367-603[»]
5X3SX-ray2.90A/B371-594[»]
SMRiQ07832
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGridi202250, 31 interactors
DIPiDIP-56722N
IntActiQ07832, 31 interactors
MINTiQ07832
STRINGi10090.ENSMUSP00000033154

PTM databases

iPTMnetiQ07832
PhosphoSitePlusiQ07832

Proteomic databases

EPDiQ07832
PaxDbiQ07832
PeptideAtlasiQ07832
PRIDEiQ07832

Genome annotation databases

EnsembliENSMUST00000033154; ENSMUSP00000033154; ENSMUSG00000030867
GeneIDi18817
KEGGimmu:18817
UCSCiuc009joo.2 mouse

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
5347
MGIiMGI:97621 Plk1

Phylogenomic databases

eggNOGiKOG0575 Eukaryota
ENOG410XQBP LUCA
GeneTreeiENSGT00940000157752
HOGENOMiHOG000248546
InParanoidiQ07832
KOiK06631
OMAiFEVDTWS
OrthoDBi507604at2759
PhylomeDBiQ07832
TreeFamiTF101089

Enzyme and pathway databases

BRENDAi2.7.11.21 3474
ReactomeiR-MMU-141444 Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal
R-MMU-156711 Polo-like kinase mediated events
R-MMU-162658 Golgi Cisternae Pericentriolar Stack Reorganization
R-MMU-174178 APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1
R-MMU-2299718 Condensation of Prophase Chromosomes
R-MMU-2467813 Separation of Sister Chromatids
R-MMU-2500257 Resolution of Sister Chromatid Cohesion
R-MMU-2565942 Regulation of PLK1 Activity at G2/M Transition
R-MMU-380259 Loss of Nlp from mitotic centrosomes
R-MMU-380270 Recruitment of mitotic centrosome proteins and complexes
R-MMU-380284 Loss of proteins required for interphase microtubule organization from the centrosome
R-MMU-380320 Recruitment of NuMA to mitotic centrosomes
R-MMU-5620912 Anchoring of the basal body to the plasma membrane
R-MMU-5663220 RHO GTPases Activate Formins
R-MMU-68877 Mitotic Prometaphase
R-MMU-68884 Mitotic Telophase/Cytokinesis
R-MMU-69273 Cyclin A/B1/B2 associated events during G2/M transition
R-MMU-8852276 The role of GTSE1 in G2/M progression after G2 checkpoint
R-MMU-8854518 AURKA Activation by TPX2

Miscellaneous databases

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

More...
ChiTaRSi
Plk1 mouse

Protein Ontology

More...
PROi
PR:Q07832

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSMUSG00000030867 Expressed in 193 organ(s), highest expression level in primary oocyte
ExpressionAtlasiQ07832 baseline and differential
GenevisibleiQ07832 MM

Family and domain databases

CDDicd13118 POLO_box_1, 1 hit
cd13117 POLO_box_2, 1 hit
cd14187 STKc_PLK1, 1 hit
Gene3Di3.30.1120.30, 2 hits
InterProiView protein in InterPro
IPR011009 Kinase-like_dom_sf
IPR033702 PLK1_cat
IPR033701 POLO_box_1
IPR033695 POLO_box_2
IPR000959 POLO_box_dom
IPR036947 POLO_box_dom_sf
IPR000719 Prot_kinase_dom
IPR017441 Protein_kinase_ATP_BS
IPR008271 Ser/Thr_kinase_AS
PfamiView protein in Pfam
PF00069 Pkinase, 1 hit
PF00659 POLO_box, 2 hits
SMARTiView protein in SMART
SM00220 S_TKc, 1 hit
SUPFAMiSSF56112 SSF56112, 1 hit
PROSITEiView protein in PROSITE
PS50078 POLO_BOX, 2 hits
PS00107 PROTEIN_KINASE_ATP, 1 hit
PS50011 PROTEIN_KINASE_DOM, 1 hit
PS00108 PROTEIN_KINASE_ST, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiPLK1_MOUSE
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q07832
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 1995
Last sequence update: October 1, 1996
Last modified: October 16, 2019
This is version 196 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. Human and mouse protein kinases
    Human and mouse protein kinases: classification and index
  4. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
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