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PIK3R1
HPA
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  • SUMMARY

  • TISSUE

  • BRAIN

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  • SUBCELL

  • CANCER

  • BLOOD

  • CELL LINE

  • STRUCT & INT

  • PIK3R1
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

PIK3R1
Synonyms GRB1, p85, p85-ALPHA
Gene descriptioni

Full gene name according to HGNC.

Phosphoinositide-3-kinase regulatory subunit 1
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Cancer-related genes
Disease related genes
Human disease related genes
Metabolic proteins
Plasma proteins
RAS pathway related proteins
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 5
Cytoband q13.1
Chromosome location (bp) 68215740 - 68301821
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

24
Ensembl ENSG00000145675 (version 109)
Entrez gene 5295
HGNC HGNC:8979
UniProt P27986 (UniProt - Evidence at protein level)
neXtProt NX_P27986
GeneCards PIK3R1
Antibodypedia PIK3R1 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Binds to activated (phosphorylated) protein-Tyr kinases, through its SH2 domain, and acts as an adapter, mediating the association of the p110 catalytic unit to the plasma membrane. Necessary for the insulin-stimulated increase in glucose uptake and glycogen synthesis in insulin-sensitive tissues. Plays an important role in signaling in response to FGFR1, FGFR2, FGFR3, FGFR4, KITLG/SCF, KIT, PDGFRA and PDGFRB. Likewise, plays a role in ITGB2 signaling 1, 2, 3. Modulates the cellular response to ER stress by promoting nuclear translocation of XBP1 isoform 2 in a ER stress- and/or insulin-dependent manner during metabolic overloading in the liver and hence plays a role in glucose tolerance improvement 4.... show less
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Host-virus interaction, Protein transport, Stress response, Transport
Gene summary (Entrez)i

Useful information about the gene from Entrez

Phosphatidylinositol 3-kinase phosphorylates the inositol ring of phosphatidylinositol at the 3-prime position. The enzyme comprises a 110 kD catalytic subunit and a regulatory subunit of either 85, 55, or 50 kD. This gene encodes the 85 kD regulatory subunit. Phosphatidylinositol 3-kinase plays an important role in the metabolic actions of insulin, and a mutation in this gene has been associated with insulin resistance. Alternative splicing of this gene results in four transcript variants encoding different isoforms. [provided by RefSeq, Jun 2011]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
PIK3R1-201
ENSP00000323512
ENST00000320694
P27986
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
RAS pathway related proteins
Cancer-related genes
   Candidate cancer biomarkers
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Disease related genes
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001678 [cellular glucose homeostasis]
GO:0001784 [phosphotyrosine residue binding]
GO:0005068 [transmembrane receptor protein tyrosine kinase adaptor activity]
GO:0005158 [insulin receptor binding]
GO:0005159 [insulin-like growth factor receptor binding]
GO:0005168 [neurotrophin TRKA receptor binding]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005942 [phosphatidylinositol 3-kinase complex]
GO:0005943 [phosphatidylinositol 3-kinase complex, class IA]
GO:0006955 [immune response]
GO:0007165 [signal transduction]
GO:0008286 [insulin receptor signaling pathway]
GO:0010592 [positive regulation of lamellipodium assembly]
GO:0014065 [phosphatidylinositol 3-kinase signaling]
GO:0015031 [protein transport]
GO:0016020 [membrane]
GO:0019903 [protein phosphatase binding]
GO:0030183 [B cell differentiation]
GO:0030217 [T cell differentiation]
GO:0032869 [cellular response to insulin stimulus]
GO:0033120 [positive regulation of RNA splicing]
GO:0034446 [substrate adhesion-dependent cell spreading]
GO:0034976 [response to endoplasmic reticulum stress]
GO:0035014 [phosphatidylinositol 3-kinase regulator activity]
GO:0042307 [positive regulation of protein import into nucleus]
GO:0043066 [negative regulation of apoptotic process]
GO:0043125 [ErbB-3 class receptor binding]
GO:0043548 [phosphatidylinositol 3-kinase binding]
GO:0043551 [regulation of phosphatidylinositol 3-kinase activity]
GO:0043559 [insulin binding]
GO:0045944 [positive regulation of transcription by RNA polymerase II]
GO:0046326 [positive regulation of glucose import]
GO:0046854 [phosphatidylinositol phosphate biosynthetic process]
GO:0046935 [1-phosphatidylinositol-3-kinase regulator activity]
GO:0048009 [insulin-like growth factor receptor signaling pathway]
GO:0048471 [perinuclear region of cytoplasm]
GO:0050821 [protein stabilization]
GO:0051491 [positive regulation of filopodium assembly]
GO:0051497 [negative regulation of stress fiber assembly]
GO:0060396 [growth hormone receptor signaling pathway]
GO:0120183 [positive regulation of focal adhesion disassembly]
GO:1900103 [positive regulation of endoplasmic reticulum unfolded protein response]
GO:1903078 [positive regulation of protein localization to plasma membrane]
Show all
424 aa
50 kDa
No 0
PIK3R1-202
ENSP00000338554
ENST00000336483
P27986
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
RAS pathway related proteins
Cancer-related genes
   Candidate cancer biomarkers
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Disease related genes
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001678 [cellular glucose homeostasis]
GO:0001784 [phosphotyrosine residue binding]
GO:0005068 [transmembrane receptor protein tyrosine kinase adaptor activity]
GO:0005158 [insulin receptor binding]
GO:0005159 [insulin-like growth factor receptor binding]
GO:0005168 [neurotrophin TRKA receptor binding]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005942 [phosphatidylinositol 3-kinase complex]
GO:0005943 [phosphatidylinositol 3-kinase complex, class IA]
GO:0006955 [immune response]
GO:0007165 [signal transduction]
GO:0008286 [insulin receptor signaling pathway]
GO:0010592 [positive regulation of lamellipodium assembly]
GO:0014065 [phosphatidylinositol 3-kinase signaling]
GO:0015031 [protein transport]
GO:0016020 [membrane]
GO:0019903 [protein phosphatase binding]
GO:0030183 [B cell differentiation]
GO:0030217 [T cell differentiation]
GO:0032869 [cellular response to insulin stimulus]
GO:0033120 [positive regulation of RNA splicing]
GO:0034446 [substrate adhesion-dependent cell spreading]
GO:0034976 [response to endoplasmic reticulum stress]
GO:0035014 [phosphatidylinositol 3-kinase regulator activity]
GO:0042307 [positive regulation of protein import into nucleus]
GO:0043066 [negative regulation of apoptotic process]
GO:0043125 [ErbB-3 class receptor binding]
GO:0043548 [phosphatidylinositol 3-kinase binding]
GO:0043551 [regulation of phosphatidylinositol 3-kinase activity]
GO:0043559 [insulin binding]
GO:0045944 [positive regulation of transcription by RNA polymerase II]
GO:0046326 [positive regulation of glucose import]
GO:0046854 [phosphatidylinositol phosphate biosynthetic process]
GO:0046935 [1-phosphatidylinositol-3-kinase regulator activity]
GO:0048009 [insulin-like growth factor receptor signaling pathway]
GO:0048471 [perinuclear region of cytoplasm]
GO:0050821 [protein stabilization]
GO:0051491 [positive regulation of filopodium assembly]
GO:0051497 [negative regulation of stress fiber assembly]
GO:0060396 [growth hormone receptor signaling pathway]
GO:0120183 [positive regulation of focal adhesion disassembly]
GO:1900103 [positive regulation of endoplasmic reticulum unfolded protein response]
GO:1903078 [positive regulation of protein localization to plasma membrane]
Show all
454 aa
53.5 kDa
No 0
PIK3R1-204
ENSP00000513333
ENST00000517643
A0A2X0SFG1
[Target identity:100%; Query identity:100%] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005515 [protein binding]
GO:0005737 [cytoplasm]
GO:0007165 [signal transduction]
GO:0015031 [protein transport]
Show all
724 aa
83.6 kDa
No 0
PIK3R1-208
ENSP00000429156
ENST00000519025
H0YBC2
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
153 aa
18.4 kDa
No 0
PIK3R1-210
ENSP00000428566
ENST00000520675
H0YB27
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0007165 [signal transduction]
Show all
54 aa
6.1 kDa
No 0
PIK3R1-211
ENSP00000428056
ENST00000521381
P27986
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
A0A2X0SFG1
[Target identity:100%; Query identity:100%] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
RAS pathway related proteins
Cancer-related genes
   Candidate cancer biomarkers
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Disease related genes
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001678 [cellular glucose homeostasis]
GO:0001784 [phosphotyrosine residue binding]
GO:0001953 [negative regulation of cell-matrix adhesion]
GO:0002687 [positive regulation of leukocyte migration]
GO:0005068 [transmembrane receptor protein tyrosine kinase adaptor activity]
GO:0005158 [insulin receptor binding]
GO:0005159 [insulin-like growth factor receptor binding]
GO:0005168 [neurotrophin TRKA receptor binding]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005737 [cytoplasm]
GO:0005801 [cis-Golgi network]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005911 [cell-cell junction]
GO:0005942 [phosphatidylinositol 3-kinase complex]
GO:0005943 [phosphatidylinositol 3-kinase complex, class IA]
GO:0006366 [transcription by RNA polymerase II]
GO:0006468 [protein phosphorylation]
GO:0006606 [protein import into nucleus]
GO:0006955 [immune response]
GO:0007162 [negative regulation of cell adhesion]
GO:0007165 [signal transduction]
GO:0008286 [insulin receptor signaling pathway]
GO:0008625 [extrinsic apoptotic signaling pathway via death domain receptors]
GO:0008630 [intrinsic apoptotic signaling pathway in response to DNA damage]
GO:0010592 [positive regulation of lamellipodium assembly]
GO:0014065 [phosphatidylinositol 3-kinase signaling]
GO:0015031 [protein transport]
GO:0016020 [membrane]
GO:0019903 [protein phosphatase binding]
GO:0030183 [B cell differentiation]
GO:0030217 [T cell differentiation]
GO:0030316 [osteoclast differentiation]
GO:0032760 [positive regulation of tumor necrosis factor production]
GO:0032869 [cellular response to insulin stimulus]
GO:0032991 [protein-containing complex]
GO:0033120 [positive regulation of RNA splicing]
GO:0034446 [substrate adhesion-dependent cell spreading]
GO:0034644 [cellular response to UV]
GO:0034976 [response to endoplasmic reticulum stress]
GO:0035014 [phosphatidylinositol 3-kinase regulator activity]
GO:0036312 [phosphatidylinositol 3-kinase regulatory subunit binding]
GO:0042307 [positive regulation of protein import into nucleus]
GO:0043066 [negative regulation of apoptotic process]
GO:0043125 [ErbB-3 class receptor binding]
GO:0043539 [protein serine/threonine kinase activator activity]
GO:0043548 [phosphatidylinositol 3-kinase binding]
GO:0043551 [regulation of phosphatidylinositol 3-kinase activity]
GO:0043559 [insulin binding]
GO:0043560 [insulin receptor substrate binding]
GO:0045671 [negative regulation of osteoclast differentiation]
GO:0045944 [positive regulation of transcription by RNA polymerase II]
GO:0046326 [positive regulation of glucose import]
GO:0046626 [regulation of insulin receptor signaling pathway]
GO:0046854 [phosphatidylinositol phosphate biosynthetic process]
GO:0046935 [1-phosphatidylinositol-3-kinase regulator activity]
GO:0046982 [protein heterodimerization activity]
GO:0048009 [insulin-like growth factor receptor signaling pathway]
GO:0048471 [perinuclear region of cytoplasm]
GO:0050821 [protein stabilization]
GO:0051491 [positive regulation of filopodium assembly]
GO:0051492 [regulation of stress fiber assembly]
GO:0051497 [negative regulation of stress fiber assembly]
GO:0060396 [growth hormone receptor signaling pathway]
GO:0097529 [myeloid leukocyte migration]
GO:0120183 [positive regulation of focal adhesion disassembly]
GO:1900103 [positive regulation of endoplasmic reticulum unfolded protein response]
GO:1903076 [regulation of protein localization to plasma membrane]
GO:1903078 [positive regulation of protein localization to plasma membrane]
GO:1990578 [perinuclear endoplasmic reticulum membrane]
Show all
724 aa
83.6 kDa
No 0
PIK3R1-212
ENSP00000431058
ENST00000521409
E5RJY0
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
137 aa
16.3 kDa
No 0
PIK3R1-213
ENSP00000429277
ENST00000521657
P27986
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
A0A2X0SFG1
[Target identity:100%; Query identity:100%] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
RAS pathway related proteins
Cancer-related genes
   Candidate cancer biomarkers
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Disease related genes
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001678 [cellular glucose homeostasis]
GO:0001784 [phosphotyrosine residue binding]
GO:0005068 [transmembrane receptor protein tyrosine kinase adaptor activity]
GO:0005158 [insulin receptor binding]
GO:0005159 [insulin-like growth factor receptor binding]
GO:0005168 [neurotrophin TRKA receptor binding]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005942 [phosphatidylinositol 3-kinase complex]
GO:0005943 [phosphatidylinositol 3-kinase complex, class IA]
GO:0006955 [immune response]
GO:0007165 [signal transduction]
GO:0008286 [insulin receptor signaling pathway]
GO:0010592 [positive regulation of lamellipodium assembly]
GO:0014065 [phosphatidylinositol 3-kinase signaling]
GO:0015031 [protein transport]
GO:0016020 [membrane]
GO:0019903 [protein phosphatase binding]
GO:0030183 [B cell differentiation]
GO:0030217 [T cell differentiation]
GO:0032869 [cellular response to insulin stimulus]
GO:0033120 [positive regulation of RNA splicing]
GO:0034446 [substrate adhesion-dependent cell spreading]
GO:0034976 [response to endoplasmic reticulum stress]
GO:0035014 [phosphatidylinositol 3-kinase regulator activity]
GO:0042307 [positive regulation of protein import into nucleus]
GO:0043066 [negative regulation of apoptotic process]
GO:0043125 [ErbB-3 class receptor binding]
GO:0043548 [phosphatidylinositol 3-kinase binding]
GO:0043551 [regulation of phosphatidylinositol 3-kinase activity]
GO:0043559 [insulin binding]
GO:0045944 [positive regulation of transcription by RNA polymerase II]
GO:0046326 [positive regulation of glucose import]
GO:0046854 [phosphatidylinositol phosphate biosynthetic process]
GO:0046935 [1-phosphatidylinositol-3-kinase regulator activity]
GO:0048009 [insulin-like growth factor receptor signaling pathway]
GO:0048471 [perinuclear region of cytoplasm]
GO:0050821 [protein stabilization]
GO:0051491 [positive regulation of filopodium assembly]
GO:0051497 [negative regulation of stress fiber assembly]
GO:0060396 [growth hormone receptor signaling pathway]
GO:0120183 [positive regulation of focal adhesion disassembly]
GO:1900103 [positive regulation of endoplasmic reticulum unfolded protein response]
GO:1903078 [positive regulation of protein localization to plasma membrane]
Show all
724 aa
83.6 kDa
No 0
PIK3R1-214
ENSP00000429766
ENST00000522084
E5RHI0
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
454 aa
53.3 kDa
No 0
PIK3R1-215
ENSP00000430126
ENST00000523807
E5RGI8
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
117 aa
13.3 kDa
No 0
PIK3R1-216
ENSP00000430098
ENST00000523872
P27986
[Direct mapping] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
RAS pathway related proteins
Cancer-related genes
   Candidate cancer biomarkers
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Disease related genes
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001678 [cellular glucose homeostasis]
GO:0001784 [phosphotyrosine residue binding]
GO:0005068 [transmembrane receptor protein tyrosine kinase adaptor activity]
GO:0005158 [insulin receptor binding]
GO:0005159 [insulin-like growth factor receptor binding]
GO:0005168 [neurotrophin TRKA receptor binding]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005942 [phosphatidylinositol 3-kinase complex]
GO:0005943 [phosphatidylinositol 3-kinase complex, class IA]
GO:0006955 [immune response]
GO:0007165 [signal transduction]
GO:0008286 [insulin receptor signaling pathway]
GO:0010592 [positive regulation of lamellipodium assembly]
GO:0014065 [phosphatidylinositol 3-kinase signaling]
GO:0015031 [protein transport]
GO:0016020 [membrane]
GO:0019903 [protein phosphatase binding]
GO:0030183 [B cell differentiation]
GO:0030217 [T cell differentiation]
GO:0032869 [cellular response to insulin stimulus]
GO:0033120 [positive regulation of RNA splicing]
GO:0034446 [substrate adhesion-dependent cell spreading]
GO:0034976 [response to endoplasmic reticulum stress]
GO:0035014 [phosphatidylinositol 3-kinase regulator activity]
GO:0042307 [positive regulation of protein import into nucleus]
GO:0043066 [negative regulation of apoptotic process]
GO:0043125 [ErbB-3 class receptor binding]
GO:0043548 [phosphatidylinositol 3-kinase binding]
GO:0043551 [regulation of phosphatidylinositol 3-kinase activity]
GO:0043559 [insulin binding]
GO:0045944 [positive regulation of transcription by RNA polymerase II]
GO:0046326 [positive regulation of glucose import]
GO:0046854 [phosphatidylinositol phosphate biosynthetic process]
GO:0046935 [1-phosphatidylinositol-3-kinase regulator activity]
GO:0048009 [insulin-like growth factor receptor signaling pathway]
GO:0048471 [perinuclear region of cytoplasm]
GO:0050821 [protein stabilization]
GO:0051491 [positive regulation of filopodium assembly]
GO:0051497 [negative regulation of stress fiber assembly]
GO:0060396 [growth hormone receptor signaling pathway]
GO:0120183 [positive regulation of focal adhesion disassembly]
GO:1900103 [positive regulation of endoplasmic reticulum unfolded protein response]
GO:1903078 [positive regulation of protein localization to plasma membrane]
Show all
361 aa
42.8 kDa
No 0
PIK3R1-217
ENSP00000513315
ENST00000697457
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005515 [protein binding]
GO:0007165 [signal transduction]
Show all
699 aa
80.8 kDa
No 0
PIK3R1-218
ENSP00000513316
ENST00000697458
A0A2X0SFG1
[Target identity:100%; Query identity:100%] Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005515 [protein binding]
GO:0005737 [cytoplasm]
GO:0007165 [signal transduction]
GO:0015031 [protein transport]
Show all
724 aa
83.6 kDa
No 0
PIK3R1-220
ENSP00000513318
ENST00000697460
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0007165 [signal transduction]
Show all
549 aa
64.3 kDa
No 0
PIK3R1-221
ENSP00000513319
ENST00000697461
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005515 [protein binding]
GO:0007165 [signal transduction]
Show all
732 aa
84.5 kDa
No 0
PIK3R1-222
ENSP00000513320
ENST00000697462
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
462 aa
54.4 kDa
No 0
PIK3R1-225
ENSP00000513323
ENST00000697465
B3KWZ7
[Target identity:100%; Query identity:100%] cDNA FLJ44373 fis, clone TRACH3009455, highly similar to Phosphatidylinositol 3-kinase regulatory subunit alpha
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016301 [kinase activity]
GO:0016310 [phosphorylation]
Show all
403 aa
47.7 kDa
No 0
PIK3R1-226
ENSP00000513324
ENST00000697466
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
393 aa
46.3 kDa
No 0
PIK3R1-227
ENSP00000513325
ENST00000697467
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
361 aa
42.8 kDa
No 0
PIK3R1-228
ENSP00000513326
ENST00000697468
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
385 aa
45.5 kDa
No 0
PIK3R1-229
ENSP00000513327
ENST00000697469
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
231 aa
27.9 kDa
No 0
PIK3R1-230
ENSP00000513328
ENST00000697470
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
235 aa
28.3 kDa
No 0
PIK3R1-232
ENSP00000513334
ENST00000697556
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005515 [protein binding]
GO:0007165 [signal transduction]
Show all
406 aa
46 kDa
No 0
PIK3R1-233
ENSP00000513335
ENST00000697557
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
RAS pathway related proteins
Cancer-related genes
   Mutated cancer genes
   Mutational cancer driver genes
   COSMIC somatic mutations in cancer genes
   COSMIC Somatic Mutations
   COSMIC Other Mutations
   COSMIC Missense Mutations
   COSMIC Frameshift Mutations
Human disease related genes
   Congenital malformations
   Other congenital malformations
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
385 aa
45.5 kDa
No 0

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