UniProtKB - O97143 (PLK4_DROME)
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Protein
Serine/threonine-protein kinase PLK4
Gene
SAK
Organism
Drosophila melanogaster (Fruit fly)
Status
Functioni
Serine/threonine-protein kinase that plays a central role in centriole duplication. Able to trigger procentriole formation on the surface of the mother centriole cylinder, using mother centriole as a platform, leading to the recruitment of centriole biogenesis proteins such as Sas-6. When overexpressed, it is able to induce centrosome amplification through the simultaneous generation of multiple procentrioles adjoining each parental centriole during S phase. Centrosome amplification following overexpression can initiate tumorigenesis, highlighting the importance of centrosome regulation in cancers.3 Publications
Catalytic activityi
ATP + a protein = ADP + a phosphoprotein.
Sites
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Binding sitei | 43 | ATPPROSITE-ProRule annotation | 1 | |
| Active sitei | 138 | Proton acceptorPROSITE-ProRule annotation | 1 |
Regions
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Nucleotide bindingi | 20 – 28 | ATPPROSITE-ProRule annotation | 9 |
GO - Molecular functioni
- ATP binding Source: UniProtKB-KW
- protein kinase activity Source: FlyBase
- protein serine/threonine kinase activity Source: FlyBase
GO - Biological processi
- centriole replication Source: FlyBase
- centrosome cycle Source: FlyBase
- male meiotic nuclear division Source: FlyBase
- positive regulation of protein catabolic process Source: FlyBase
- protein autophosphorylation Source: FlyBase
- protein phosphorylation Source: FlyBase
- regulation of centriole replication Source: FlyBase
- regulation of protein stability Source: FlyBase
- sperm axoneme assembly Source: FlyBase
- syncytial blastoderm mitotic cell cycle Source: FlyBase
Keywordsi
| Molecular function | Kinase, Serine/threonine-protein kinase, Transferase |
| Ligand | ATP-binding, Nucleotide-binding |
Enzyme and pathway databases
| SignaLinki | O97143. |
Names & Taxonomyi
| Protein namesi | Recommended name: Serine/threonine-protein kinase PLK4 (EC:2.7.11.21)Alternative name(s): Polo-like kinase 4 Short name: PLK-4 Serine/threonine-protein kinase SAK |
| Gene namesi | Name:SAK ORF Names:CG7186 |
| Organismi | Drosophila melanogaster (Fruit fly) |
| Taxonomic identifieri | 7227 [NCBI] |
| Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Hexapoda › Insecta › Pterygota › Neoptera › Holometabola › Diptera › Brachycera › Muscomorpha › Ephydroidea › Drosophilidae › Drosophila › Sophophora › |
| Proteomesi |
|
Organism-specific databases
| FlyBasei | FBgn0026371. SAK. |
Subcellular locationi
- Cytoplasm › cytoskeleton › microtubule organizing center › centrosome › centriole 3 Publications
Note: Colocalizes with Sas-4 and Patronin at the microtubule organizing center.
GO - Cellular componenti
- centriole Source: FlyBase
Keywords - Cellular componenti
Cytoplasm, CytoskeletonPathology & Biotechi
Mutagenesis
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Mutagenesisi | 293 | S → A in SAK-ND; impairs interaction with SCF-slmb ubiquitin ligase complex and subsequent ubiquitination; when associated with A-297. 1 Publication | 1 | |
| Mutagenesisi | 297 | T → A in SAK-ND; impairs interaction with SCF-slmb ubiquitin ligase complex and subsequent ubiquitination; when associated with A-292. 1 Publication | 1 |
PTM / Processingi
Molecule processing
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| ChainiPRO_0000385291 | 1 – 769 | Serine/threonine-protein kinase PLK4Add BLAST | 769 |
Post-translational modificationi
Ubiquitinated by the SCF-slmb ubiquitin ligase complex; leading to its degradation by the proteasome during interphase and regulating centriole number and ensuring the block to centriole reduplication.2 Publications
Keywords - PTMi
Ubl conjugationProteomic databases
| PaxDbi | O97143. |
| PRIDEi | O97143. |
Interactioni
Subunit structurei
Homodimer.By similarity
Protein-protein interaction databases
| BioGridi | 65629. 62 interactors. |
| DIPi | DIP-49071N. |
| IntActi | O97143. 55 interactors. |
| MINTi | MINT-7952919. |
| STRINGi | 7227.FBpp0078042. |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Beta strandi | 397 – 400 | Combined sources | 4 | |
| Beta strandi | 402 – 408 | Combined sources | 7 | |
| Beta strandi | 414 – 421 | Combined sources | 8 | |
| Turni | 423 – 425 | Combined sources | 3 | |
| Beta strandi | 426 – 436 | Combined sources | 11 | |
| Beta strandi | 442 – 446 | Combined sources | 5 | |
| Turni | 449 – 452 | Combined sources | 4 | |
| Helixi | 468 – 470 | Combined sources | 3 | |
| Beta strandi | 471 – 473 | Combined sources | 3 | |
| Turni | 474 – 476 | Combined sources | 3 | |
| Helixi | 479 – 481 | Combined sources | 3 | |
| Helixi | 482 – 496 | Combined sources | 15 | |
| Beta strandi | 499 – 505 | Combined sources | 7 | |
| Beta strandi | 507 – 514 | Combined sources | 8 | |
| Beta strandi | 520 – 524 | Combined sources | 5 | |
| Beta strandi | 529 – 533 | Combined sources | 5 | |
| Turni | 534 – 536 | Combined sources | 3 | |
| Beta strandi | 537 – 541 | Combined sources | 5 | |
| Helixi | 554 – 578 | Combined sources | 25 | |
| Beta strandi | 589 – 593 | Combined sources | 5 | |
| Beta strandi | 660 – 666 | Combined sources | 7 | |
| Turni | 667 – 669 | Combined sources | 3 | |
| Beta strandi | 670 – 675 | Combined sources | 6 | |
| Beta strandi | 680 – 684 | Combined sources | 5 | |
| Beta strandi | 689 – 692 | Combined sources | 4 | |
| Helixi | 695 – 697 | Combined sources | 3 | |
| Beta strandi | 701 – 704 | Combined sources | 4 | |
| Beta strandi | 710 – 713 | Combined sources | 4 | |
| Helixi | 723 – 727 | Combined sources | 5 | |
| Helixi | 730 – 738 | Combined sources | 9 |
3D structure databases
| Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
| 4G7N | X-ray | 2.30 | A/B | 382-602 | [»] | |
| 4NK7 | X-ray | 3.23 | A | 383-601 | [»] | |
| 5LHX | X-ray | 1.53 | A/B | 657-745 | [»] | |
| ProteinModelPortali | O97143. | |||||
| SMRi | O97143. | |||||
| ModBasei | Search... | |||||
| MobiDBi | Search... | |||||
Family & Domainsi
Domains and Repeats
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Domaini | 14 – 267 | Protein kinasePROSITE-ProRule annotationAdd BLAST | 254 | |
| Domaini | 665 – 734 | POLO boxPROSITE-ProRule annotationAdd BLAST | 70 |
Sequence similaritiesi
Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. CDC5/Polo subfamily.PROSITE-ProRule annotation
Phylogenomic databases
| eggNOGi | KOG0575. Eukaryota. ENOG410XQBP. LUCA. |
| InParanoidi | O97143. |
| KOi | K08863. |
| OMAi | GADFEVW. |
| OrthoDBi | EOG091G05NQ. |
| PhylomeDBi | O97143. |
Family and domain databases
| CDDi | cd13114. POLO_box_Plk4_1. 1 hit. cd13115. POLO_box_Plk4_2. 1 hit. cd13116. POLO_box_Plk4_3. 1 hit. |
| InterProi | View protein in InterPro IPR011009. Kinase-like_dom. IPR033700. Plk4. IPR000959. POLO_box_dom. IPR033699. POLO_box_Plk4_1. IPR033698. POLO_box_Plk4_2. IPR033696. POLO_box_Plk4_C. IPR000719. Prot_kinase_dom. IPR017441. Protein_kinase_ATP_BS. IPR008266. Tyr_kinase_AS. |
| PANTHERi | PTHR24345:SF64. PTHR24345:SF64. 1 hit. |
| Pfami | View protein in Pfam PF00069. Pkinase. 1 hit. |
| SUPFAMi | SSF56112. SSF56112. 1 hit. |
| PROSITEi | View protein in PROSITE PS50078. POLO_BOX. 1 hit. PS00107. PROTEIN_KINASE_ATP. 1 hit. PS50011. PROTEIN_KINASE_DOM. 1 hit. |
Sequencei
Sequence statusi: Complete.
O97143-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MLSNRAFGET IEDYEVQHLL GKGGFATVYK ARCLHTHQDV AIKMIDKKLI
60 70 80 90 100
QGTGLTNRVR QEVEIHSRLK HPSVLQLYTF FQDANYVYLV LELAHNGELH
110 120 130 140 150
RYMNHIARPF TETEAASILK QVVAGLLYLH SHNIMHRDIS LSNLLLSREM
160 170 180 190 200
HVKIADFGLA TQLKRPDERH MTMCGTPNYI SPEVVSRTSH GLPADVWSVG
210 220 230 240 250
CMLYTLLVGR PPFETDAVQS TLNKVVMSEY IMPAHLSYEA QDLINKLLKK
260 270 280 290 300
LPHERITLEA VLCHPFMLKC SNGGHSAPGA LNVFSQSMES GDSGIITFAS
310 320 330 340 350
SDSRNSQQIR SVENSGPQQV LPQIREEFKQ VHHKLPYEQT GLFGQASTGL
360 370 380 390 400
AEPNWPGAAK SSAFCMEAGN VPNSKQASLK EDRISVPPLN TKRLLPTRYK
410 420 430 440 450
TKNAIMSILR NGEVVLEFLK FRPTYNEDRI NDICRISDDG QRIIIYQPDP
460 470 480 490 500
GRGLPVREQP PDLQIPSGDC VYNYDNLPSK HWKKYIYGAR FVGLVKSKTP
510 520 530 540 550
KVTYFSTLGK CQLMETMTDF EIRFYSGAKL LKTPSEGLKV YDRNGMLLSD
560 570 580 590 600
YSCSESRSLI EHGNECFTHC VNISNALEVA QTKDNSCFPV TIGRRPITDV
610 620 630 640 650
QPAQRLDGLR DTTNIAFSTP KSNQGSINFS LSTISSTRNT SDFGTNCSRS
660 670 680 690 700
NMLAAHQNIP IKRINVPEIG IATELSHGVV QVQFYDGSVV SVIPSMQGGG
710 720 730 740 750
ITYTQPNGTS THFGKGDDLP FPVRDRVGQI PNIQLKLKTA PLLGSGRKTD
760
YNNAMTPKTT TPYYNRMLL
Experimental Info
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Sequence conflicti | 145 | L → V in AAO45202 (Ref. 4) Curated | 1 |
Sequence databases
| Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF106952 mRNA. Translation: AAD19607.1. AE014296 Genomic DNA. Translation: AAF51737.1. BT004846 mRNA. Translation: AAO45202.1. BT044561 mRNA. Translation: ACI15756.1. |
| RefSeqi | NP_649324.1. NM_141067.3. |
| UniGenei | Dm.3240. |
Genome annotation databases
| EnsemblMetazoai | FBtr0078387; FBpp0078042; FBgn0026371. |
| GeneIDi | 40384. |
| KEGGi | dme:Dmel_CG7186. |
| UCSCi | CG7186-RA. d. melanogaster. |
Similar proteinsi
Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:| 100% | UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry. |
| 90% | UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence). |
| 50% | UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster. |
Entry informationi
| Entry namei | PLK4_DROME | |
| Accessioni | O97143Primary (citable) accession number: O97143 Secondary accession number(s): Q86NL8 | |
| Entry historyi | Integrated into UniProtKB/Swiss-Prot: | September 22, 2009 |
| Last sequence update: | May 1, 1999 | |
| Last modified: | July 5, 2017 | |
| This is version 153 of the entry and version 1 of the sequence. See complete history. | ||
| Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
| Annotation program | Drosophila annotation project | |
Miscellaneousi
Keywords - Technical termi
3D-structure, Complete proteome, Reference proteomeDocuments
- Drosophila
Drosophila: entries, gene names and cross-references to FlyBase - PDB cross-references
Index of Protein Data Bank (PDB) cross-references - SIMILARITY comments
Index of protein domains and families
