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Entry version 172 (08 May 2019)
Sequence version 2 (27 Jul 2011)
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Protein

Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform

Gene

Pik3ca

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

Phosphoinositide-3-kinase (PI3K) that phosphorylates PtdIns (Phosphatidylinositol), PtdIns4P (Phosphatidylinositol 4-phosphate) and PtdIns(4,5)P2 (Phosphatidylinositol 4,5-bisphosphate) to generate phosphatidylinositol 3,4,5-trisphosphate (PIP3). PIP3 plays a key role by recruiting PH domain-containing proteins to the membrane, including AKT1 and PDPK1, activating signaling cascades involved in cell growth, survival, proliferation, motility and morphology. Participates in cellular signaling in response to various growth factors. Involved in the activation of AKT1 upon stimulation by receptor tyrosine kinases ligands such as EGF, insulin, IGF1, VEGFA and PDGF. Involved in signaling via insulin-receptor substrate (IRS) proteins. Essential in endothelial cell migration during vascular development through VEGFA signaling, possibly by regulating RhoA activity. Required for lymphatic vasculature development, possibly by binding to RAS and by activation by EGF and FGF2, but not by PDGF. Regulates invadopodia formation through the PDPK1-AKT1 pathway. Participates in cardiomyogenesis in embryonic stem cells through a AKT1 pathway. Participates in vasculogenesis in embryonic stem cells through PDK1 and protein kinase C pathway. Also has serine-protein kinase activity: phosphorylates PIK3R1 (p85alpha regulatory subunit), EIF4EBP1 and HRAS. Plays a role in the positive regulation of phagocytosis and pinocytosis (PubMed:19604150).7 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>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 processAngiogenesis, Phagocytosis
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
2.7.1.137 3474
2.7.1.153 3474

Reactome - a knowledgebase of biological pathways and processes

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Reactomei
R-MMU-109704 PI3K Cascade
R-MMU-112399 IRS-mediated signalling
R-MMU-114604 GPVI-mediated activation cascade
R-MMU-1250342 PI3K events in ERBB4 signaling
R-MMU-1257604 PIP3 activates AKT signaling
R-MMU-1433557 Signaling by SCF-KIT
R-MMU-1660499 Synthesis of PIPs at the plasma membrane
R-MMU-180292 GAB1 signalosome
R-MMU-186763 Downstream signal transduction
R-MMU-1963642 PI3K events in ERBB2 signaling
R-MMU-198203 PI3K/AKT activation
R-MMU-202424 Downstream TCR signaling
R-MMU-2029485 Role of phospholipids in phagocytosis
R-MMU-210993 Tie2 Signaling
R-MMU-2424491 DAP12 signaling
R-MMU-2730905 Role of LAT2/NTAL/LAB on calcium mobilization
R-MMU-388841 Costimulation by the CD28 family
R-MMU-389357 CD28 dependent PI3K/Akt signaling
R-MMU-416476 G alpha (q) signalling events
R-MMU-4420097 VEGFA-VEGFR2 Pathway
R-MMU-512988 Interleukin-3, Interleukin-5 and GM-CSF signaling
R-MMU-5654689 PI-3K cascade:FGFR1
R-MMU-5654695 PI-3K cascade:FGFR2
R-MMU-5654710 PI-3K cascade:FGFR3
R-MMU-5654720 PI-3K cascade:FGFR4
R-MMU-6811558 PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling
R-MMU-8851907 MET activates PI3K/AKT signaling
R-MMU-8853659 RET signaling
R-MMU-9009391 Non-genomic estrogen signaling
R-MMU-9027276 Erythropoietin activates Phosphoinositide-3-kinase (PI3K)
R-MMU-912526 Interleukin receptor SHC signaling
R-MMU-912631 Regulation of signaling by CBL

<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:
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform (EC:2.7.1.153By similarity)
Short name:
PI3-kinase subunit alpha
Short name:
PI3K-alpha
Short name:
PI3Kalpha
Short name:
PtdIns-3-kinase subunit alpha
Alternative name(s):
Phosphatidylinositol 4,5-bisphosphate 3-kinase 110 kDa catalytic subunit alpha
Short name:
PtdIns-3-kinase subunit p110-alpha
Short name:
p110alpha
Phosphoinositide-3-kinase catalytic alpha polypeptide
Serine/threonine protein kinase PIK3CA (EC:2.7.11.1By similarity)
<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:Pik3ca
<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 3

Organism-specific databases

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

More...
MGIi
MGI:1206581 Pik3ca

<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

<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

Lethal. Embryonic fibroblasts cells are resistant to oncogenic transformation induced by oncogenic receptor tyrosine kinases (RTKs), are unable to differentiate into adipocytes and deficient in cellular signaling in response to various growth factors. Defective responsiveness to insulin led to reduced somatic growth, hyperinsulinemia, glucose intolerance, hyperphagia and increased adiposity.4 Publications

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>Mutagenesisi208T → D: Abolishes binding to HRAS and KRAS; does not affect kinase activity; displays defective development of the lymphatic vasculature, resulting in perinatal appearance of chylous ascites and is highly resistant to endogenous Ras oncogene-induced tumorigenesis; when associated with A-227. 1 Publication1
Mutagenesisi227K → A: Abolishes binding to HRAS and KRAS; does not affect kinase activity; displays defective development of the lymphatic vasculature, resulting in perinatal appearance of chylous ascites and is highly resistant to endogenous Ras oncogene-induced tumorigenesis; when associated with D-208. 1 Publication1
Mutagenesisi933D → A: Loss of kinase activity; displays early embryonic lethality at E10-11 and severe defects in angiogenic sprouting and vascular remodeling. Heterozygous mice yield adult mice with markedly impaired insulin signaling and reduced activation of effector pathways such as Akt/PKB. 1 Publication1

Keywords - Diseasei

Proto-oncogene

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL2499

<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_00000887861 – 1068Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoformAdd BLAST1068

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
P42337

MaxQB - The MaxQuant DataBase

More...
MaxQBi
P42337

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

More...
PaxDbi
P42337

PRoteomics IDEntifications database

More...
PRIDEi
P42337

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P42337

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

More...
PhosphoSitePlusi
P42337

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSMUSG00000027665 Expressed in 289 organ(s), highest expression level in rostral migratory stream

ExpressionAtlas, Differential and Baseline Expression

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ExpressionAtlasi
P42337 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

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Genevisiblei
P42337 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

Heterodimer of a catalytic subunit PIK3CA and a p85 regulatory subunit (PIK3R1, PIK3R2 or PIK3R3) (PubMed:8139567). Interacts with IRS1 in nuclear extracts (PubMed:15197263). Interacts with RUFY3. Interacts with RASD2. Interacts with APPL1 (By similarity). Interacts with HRAS and KRAS (PubMed:17540175). Interaction with HRAS/KRAS is required for PI3K pathway signaling and cell proliferation stimulated by EGF and FGF2 (PubMed:17540175). Interacts with FAM83B; activates the PI3K/AKT signaling cascade (By similarity).By similarity3 Publications

<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

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
202160, 7 interactors

CORUM comprehensive resource of mammalian protein complexes

More...
CORUMi
P42337

Database of interacting proteins

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DIPi
DIP-32095N

Protein interaction database and analysis system

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IntActi
P42337, 13 interactors

Molecular INTeraction database

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MINTi
P42337

STRING: functional protein association networks

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STRINGi
10090.ENSMUSP00000029201

Chemistry databases

BindingDB database of measured binding affinities

More...
BindingDBi
P42337

<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

11068
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

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PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
4A55X-ray3.50A1-1068[»]

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

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SMRi
P42337

Database of comparative protein structure models

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ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
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>Domaini16 – 105PI3K-ABDPROSITE-ProRule annotationAdd BLAST90
Domaini187 – 289PI3K-RBDPROSITE-ProRule annotationAdd BLAST103
Domaini330 – 487C2 PI3K-typePROSITE-ProRule annotationAdd BLAST158
Domaini517 – 694PIK helicalPROSITE-ProRule annotationAdd BLAST178
Domaini797 – 1068PI3K/PI4KPROSITE-ProRule annotationAdd BLAST272

<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 PI3K-ABD domain and the PI3K-RBD domain interact with the PI3K/PI4K kinase domain. The C2 PI3K-type domain may facilitate the recruitment to the plasma membrane. The inhibitory interactions with PIK3R1 are mediated by the PI3K-ABD domain and the C2 PI3K-type domain with the iSH2 (inter-SH2) region of PIK3R1, and the C2 PI3K-type domain, the PI3K helical domain, and the PI3K/PI4K kinase domain with the nSH2 (N-terminal SH2) region of PIK3R1.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 PI3/PI4-kinase family.PROSITE-ProRule annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0904 Eukaryota
COG5032 LUCA

Ensembl GeneTree

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GeneTreei
ENSGT00940000155531

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

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HOGENOMi
HOG000252911

InParanoid: Eukaryotic Ortholog Groups

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InParanoidi
P42337

KEGG Orthology (KO)

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KOi
K00922

Database of Orthologous Groups

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OrthoDBi
204282at2759

TreeFam database of animal gene trees

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TreeFami
TF102031

Family and domain databases

Conserved Domains Database

More...
CDDi
cd05175 PI3Kc_IA_alpha, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

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Gene3Di
1.10.1070.11, 1 hit

Integrated resource of protein families, domains and functional sites

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InterProi
View protein in InterPro
IPR016024 ARM-type_fold
IPR011009 Kinase-like_dom_sf
IPR000403 PI3/4_kinase_cat_dom
IPR036940 PI3/4_kinase_cat_sf
IPR018936 PI3/4_kinase_CS
IPR003113 PI3K_adapt-bd_dom
IPR002420 PI3K_C2_dom
IPR000341 PI3K_Ras-bd_dom
IPR008290 PI3K_Vps34
IPR037704 PI3Kalpha_dom
IPR015433 PI_Kinase
IPR001263 PInositide-3_kin_accessory_dom
IPR029071 Ubiquitin-like_domsf

The PANTHER Classification System

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PANTHERi
PTHR10048 PTHR10048, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00454 PI3_PI4_kinase, 1 hit
PF00792 PI3K_C2, 1 hit
PF02192 PI3K_p85B, 1 hit
PF00794 PI3K_rbd, 1 hit
PF00613 PI3Ka, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000587 PI3K_Vps34, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

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SMARTi
View protein in SMART
SM00142 PI3K_C2, 1 hit
SM00143 PI3K_p85B, 1 hit
SM00144 PI3K_rbd, 1 hit
SM00145 PI3Ka, 1 hit
SM00146 PI3Kc, 1 hit

Superfamily database of structural and functional annotation

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SUPFAMi
SSF48371 SSF48371, 1 hit
SSF54236 SSF54236, 1 hit
SSF56112 SSF56112, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00915 PI3_4_KINASE_1, 1 hit
PS00916 PI3_4_KINASE_2, 1 hit
PS50290 PI3_4_KINASE_3, 1 hit
PS51544 PI3K_ABD, 1 hit
PS51547 PI3K_C2, 1 hit
PS51546 PI3K_RBD, 1 hit
PS51545 PIK_HELICAL, 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>.<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 1 potential isoform that is computationally mapped.Show allAlign All

P42337-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPPRPSSGEL WGIHLMPPRI LVECLLPNGM IVTLECLREA TLVTIKHELF
60 70 80 90 100
REARKYPLHQ LLQDETSYIF VSVTQEAERE EFFDETRRLC DLRLFQPFLK
110 120 130 140 150
VIEPVGNREE KILNREIGFV IGMPVCEFDM VKDPEVQDFR RNILNVCKEA
160 170 180 190 200
VDLRDLNSPH SRAMYVYPPN VESSPELPKH IYNKLDKGQI IVVIWVIVSP
210 220 230 240 250
NNDKQKYTLK INHDCVPEQV IAEAIRKKTR SMLLSSEQLK LCVLEYQGKY
260 270 280 290 300
ILKVCGCDEY FLEKYPLSQY KYIRSCIMLG RMPNLMLMAK ESLYSQLPID
310 320 330 340 350
SFTMPSYSRR ISTATPYMNG ETSTKSLWVI NSALRIKILC ATYVNVNIRD
360 370 380 390 400
IDKIYVRTGI YHGGEPLCDN VNTQRVPCSN PRWNEWLNYD IYIPDLPRAA
410 420 430 440 450
RLCLSICSVK GRKGAKEEHC PLAWGNINLF DYTDTLVSGK MALNLWPVPH
460 470 480 490 500
GLEDLLNPIG VTGSNPNKET PCLELEFDWF SSVVKFPDMS VIEEHANWSV
510 520 530 540 550
SREAGFSYSH TGLSNRLARD NELRENDKEQ LRALCTRDPL SEITEQEKDF
560 570 580 590 600
LWSHRHYCVT IPEILPKLLL SVKWNSRDEV AQMYCLVKDW PPIKPEQAME
610 620 630 640 650
LLDCNYPDPM VRSFAVRCLE KYLTDDKLSQ YLIQLVQVLK YEQYLDNLLV
660 670 680 690 700
RFLLKKALTN QRIGHFFFWH LKSEMHNKTV SQRFGLLLES YCRACGMYLK
710 720 730 740 750
HLNRQVEAME KLINLTDILK QEKKDETQKV QMKFLVEQMR QPDFMDALQG
760 770 780 790 800
FLSPLNPAHQ LGNLRLEECR IMSSAKRPLW LNWENPDIMS ELLFQNNEII
810 820 830 840 850
FKNGDDLRQD MLTLQIIRIM ENIWQNQGLD LRMLPYGCLS IGDCVGLIEV
860 870 880 890 900
VRNSHTIMQI QCKGGLKGAL QFNSHTLHQW LKDKNKGEIY DAAIDLFTRS
910 920 930 940 950
CAGYCVATFI LGIGDRHNSN IMVKDDGQLF HIDFGHFLDH KKKKFGYKRE
960 970 980 990 1000
RVPFVLTQDF LIVISKGAQE YTKTREFERF QEMCYKAYLA IRQHANLFIN
1010 1020 1030 1040 1050
LFSMMLGSGM PELQSFDDIA YIRKTLALDK TEQEALEYFT KQMNDAHHGG
1060
WTTKMDWIFH TIKQHALN
Length:1,068
Mass (Da):124,412
Last modified:July 27, 2011 - 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:iD593283B416ABFD0
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 is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
D3YY41D3YY41_MOUSE
Phosphatidylinositol 4,5-bisphospha...
Pik3ca mCG_20268
946Annotation score:

Annotation score:2 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 conflicti399A → L in AAA18334 (PubMed:8139567).Curated1

Sequence databases

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EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

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DDBJi
Links Updated
U03279 mRNA Translation: AAA18334.1
CH466530 Genomic DNA Translation: EDL34990.1
BC089038 mRNA Translation: AAH89038.1
BC130228 mRNA Translation: AAI30229.1

The Consensus CDS (CCDS) project

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CCDSi
CCDS38409.1

NCBI Reference Sequences

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RefSeqi
NP_032865.2, NM_008839.2
XP_006535472.1, XM_006535409.3
XP_006535473.1, XM_006535410.3

Genome annotation databases

Ensembl eukaryotic genome annotation project

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Ensembli
ENSMUST00000029201; ENSMUSP00000029201; ENSMUSG00000027665
ENSMUST00000108243; ENSMUSP00000103878; ENSMUSG00000027665

Database of genes from NCBI RefSeq genomes

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GeneIDi
18706

KEGG: Kyoto Encyclopedia of Genes and Genomes

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KEGGi
mmu:18706

UCSC genome browser

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UCSCi
uc008owd.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
U03279 mRNA Translation: AAA18334.1
CH466530 Genomic DNA Translation: EDL34990.1
BC089038 mRNA Translation: AAH89038.1
BC130228 mRNA Translation: AAI30229.1
CCDSiCCDS38409.1
RefSeqiNP_032865.2, NM_008839.2
XP_006535472.1, XM_006535409.3
XP_006535473.1, XM_006535410.3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
4A55X-ray3.50A1-1068[»]
SMRiP42337
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi202160, 7 interactors
CORUMiP42337
DIPiDIP-32095N
IntActiP42337, 13 interactors
MINTiP42337
STRINGi10090.ENSMUSP00000029201

Chemistry databases

BindingDBiP42337
ChEMBLiCHEMBL2499

PTM databases

iPTMnetiP42337
PhosphoSitePlusiP42337

Proteomic databases

EPDiP42337
MaxQBiP42337
PaxDbiP42337
PRIDEiP42337

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSMUST00000029201; ENSMUSP00000029201; ENSMUSG00000027665
ENSMUST00000108243; ENSMUSP00000103878; ENSMUSG00000027665
GeneIDi18706
KEGGimmu:18706
UCSCiuc008owd.2 mouse

Organism-specific databases

Comparative Toxicogenomics Database

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CTDi
5290
MGIiMGI:1206581 Pik3ca

Phylogenomic databases

eggNOGiKOG0904 Eukaryota
COG5032 LUCA
GeneTreeiENSGT00940000155531
HOGENOMiHOG000252911
InParanoidiP42337
KOiK00922
OrthoDBi204282at2759
TreeFamiTF102031

Enzyme and pathway databases

BRENDAi2.7.1.137 3474
2.7.1.153 3474
ReactomeiR-MMU-109704 PI3K Cascade
R-MMU-112399 IRS-mediated signalling
R-MMU-114604 GPVI-mediated activation cascade
R-MMU-1250342 PI3K events in ERBB4 signaling
R-MMU-1257604 PIP3 activates AKT signaling
R-MMU-1433557 Signaling by SCF-KIT
R-MMU-1660499 Synthesis of PIPs at the plasma membrane
R-MMU-180292 GAB1 signalosome
R-MMU-186763 Downstream signal transduction
R-MMU-1963642 PI3K events in ERBB2 signaling
R-MMU-198203 PI3K/AKT activation
R-MMU-202424 Downstream TCR signaling
R-MMU-2029485 Role of phospholipids in phagocytosis
R-MMU-210993 Tie2 Signaling
R-MMU-2424491 DAP12 signaling
R-MMU-2730905 Role of LAT2/NTAL/LAB on calcium mobilization
R-MMU-388841 Costimulation by the CD28 family
R-MMU-389357 CD28 dependent PI3K/Akt signaling
R-MMU-416476 G alpha (q) signalling events
R-MMU-4420097 VEGFA-VEGFR2 Pathway
R-MMU-512988 Interleukin-3, Interleukin-5 and GM-CSF signaling
R-MMU-5654689 PI-3K cascade:FGFR1
R-MMU-5654695 PI-3K cascade:FGFR2
R-MMU-5654710 PI-3K cascade:FGFR3
R-MMU-5654720 PI-3K cascade:FGFR4
R-MMU-6811558 PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling
R-MMU-8851907 MET activates PI3K/AKT signaling
R-MMU-8853659 RET signaling
R-MMU-9009391 Non-genomic estrogen signaling
R-MMU-9027276 Erythropoietin activates Phosphoinositide-3-kinase (PI3K)
R-MMU-912526 Interleukin receptor SHC signaling
R-MMU-912631 Regulation of signaling by CBL

Miscellaneous databases

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

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ChiTaRSi
Pik3ca mouse

Protein Ontology

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PROi
PR:P42337

The Stanford Online Universal Resource for Clones and ESTs

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SOURCEi
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Gene expression databases

BgeeiENSMUSG00000027665 Expressed in 289 organ(s), highest expression level in rostral migratory stream
ExpressionAtlasiP42337 baseline and differential
GenevisibleiP42337 MM

Family and domain databases

CDDicd05175 PI3Kc_IA_alpha, 1 hit
Gene3Di1.10.1070.11, 1 hit
InterProiView protein in InterPro
IPR016024 ARM-type_fold
IPR011009 Kinase-like_dom_sf
IPR000403 PI3/4_kinase_cat_dom
IPR036940 PI3/4_kinase_cat_sf
IPR018936 PI3/4_kinase_CS
IPR003113 PI3K_adapt-bd_dom
IPR002420 PI3K_C2_dom
IPR000341 PI3K_Ras-bd_dom
IPR008290 PI3K_Vps34
IPR037704 PI3Kalpha_dom
IPR015433 PI_Kinase
IPR001263 PInositide-3_kin_accessory_dom
IPR029071 Ubiquitin-like_domsf
PANTHERiPTHR10048 PTHR10048, 1 hit
PfamiView protein in Pfam
PF00454 PI3_PI4_kinase, 1 hit
PF00792 PI3K_C2, 1 hit
PF02192 PI3K_p85B, 1 hit
PF00794 PI3K_rbd, 1 hit
PF00613 PI3Ka, 1 hit
PIRSFiPIRSF000587 PI3K_Vps34, 1 hit
SMARTiView protein in SMART
SM00142 PI3K_C2, 1 hit
SM00143 PI3K_p85B, 1 hit
SM00144 PI3K_rbd, 1 hit
SM00145 PI3Ka, 1 hit
SM00146 PI3Kc, 1 hit
SUPFAMiSSF48371 SSF48371, 1 hit
SSF54236 SSF54236, 1 hit
SSF56112 SSF56112, 1 hit
PROSITEiView protein in PROSITE
PS00915 PI3_4_KINASE_1, 1 hit
PS00916 PI3_4_KINASE_2, 1 hit
PS50290 PI3_4_KINASE_3, 1 hit
PS51544 PI3K_ABD, 1 hit
PS51547 PI3K_C2, 1 hit
PS51546 PI3K_RBD, 1 hit
PS51545 PIK_HELICAL, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

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ProtoNeti
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<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 nameiPK3CA_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: P42337
Secondary accession number(s): Q0VGQ5
<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: November 1, 1995
Last sequence update: July 27, 2011
Last modified: May 8, 2019
This is version 172 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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