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PIK3R1 phosphoinositide-3-kinase regulatory subunit 1 [ Homo sapiens (human) ]

Gene ID: 5295, updated on 8-Aug-2021

Summary

Official Symbol
PIK3R1provided by HGNC
Official Full Name
phosphoinositide-3-kinase regulatory subunit 1provided by HGNC
Primary source
HGNC:HGNC:8979
See related
Ensembl:ENSG00000145675 MIM:171833
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
p85; AGM7; GRB1; IMD36; p85-ALPHA
Summary
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]
Expression
Ubiquitous expression in fat (RPKM 16.6), brain (RPKM 16.6) and 24 other tissues See more
Orthologs
NEW
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Genomic context

See PIK3R1 in Genome Data Viewer
Location:
5q13.1
Exon count:
22
Annotation release Status Assembly Chr Location
109.20210514 current GRCh38.p13 (GCF_000001405.39) 5 NC_000005.10 (68215737..68301821)
105.20201022 previous assembly GRCh37.p13 (GCF_000001405.25) 5 NC_000005.9 (67511584..67597649)

Chromosome 5 - NC_000005.10Genomic Context describing neighboring genes Neighboring gene eukaryotic translation elongation factor 1 beta 2 pseudogene 2 Neighboring gene long intergenic non-protein coding RNA 2219 Neighboring gene Sharpr-MPRA regulatory region 5177 Neighboring gene uncharacterized LOC105379013 Neighboring gene Sharpr-MPRA regulatory region 6353

Genomic regions, transcripts, and products

Expression

  • Project title: HPA RNA-seq normal tissues
  • Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
  • BioProject: PRJEB4337
  • Publication: PMID 24309898
  • Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Phenotypes

Associated conditions

Description Tests
Agammaglobulinemia 7, autosomal recessive
MedGen: C3554689 OMIM: 615214 GeneReviews: Not available
Compare labs
APOE and BCHE as modulators of cerebral amyloid deposition: a florbetapir PET genome-wide association study.
GeneReviews: Not available
Genome-wide association study of age at menarche in African-American women.
GeneReviews: Not available
Immunodeficiency 36
MedGen: C4014934 OMIM: 616005 GeneReviews: Not available
Compare labs
SHORT syndrome
MedGen: C0878684 OMIM: 269880 GeneReviews: SHORT Syndrome
Compare labs

HIV-1 interactions

Protein interactions

Protein Gene Interaction Pubs
Envelope surface glycoprotein gp120 env HIV-1 gp120 upregulates the expression of IL-6 and IL-8 via the p38 signaling pathway and the PI3K/Akt signaling pathway in astrocytes PubMed
env CCR5 activation by gp120 triggers the assembly of endogenous Lyn, PI3K, and Pyk2 and is associated with PI3K and Pyk2 translocation from the cytoplasm to the membrane where they colocalized with Lyn PubMed
env Concomitant activation of Lyn, Pyk2, and class IA PI3K are required for gp120-induced IL-1beta production PubMed
env Insulin-like growth factor-I (IGF-I) and erythropoietin treatment protect against HIV/gp120-mediated neuronal damage in culture and in vivo, in part, through cooperative activation of phosphatidylinositol 3-kinase/Akt/GSK-3beta signaling PubMed
env CD45 modulates HIV-1 gp120-induced apoptosis by regulating Fas ligand induction and activation of the phosphoinositide 3-kinase/Akt pathway PubMed
env Pre-treatment of endothelial cells with fibroblast growth factor 2 (FGF2) protects cells from HIV-1 gp120 angiotoxicity; this protection is regulated by crosstalk among the ERK, PI3K-AKT and PKC signaling pathways PubMed
env HIV-1 gp120-induced PI3-kinase activity and calcium mobilization are inhibited by pertussis toxin and blocking antibodies directed against CCR5 and CXCR4, suggesting that this signaling is mediated through these chemokine receptors PubMed
env HIV-1 gp120-induced TNF-alpha production by primary human macrophages is mediated by phosphatidylinositol-3 (PI-3) kinase and mitogen-activated protein (MAP) kinase pathways PubMed
env HIV-1 gp120 induces an increase in tyrosine phosphorylation of two proteins, p56lck and phosphatidylinositol 3-kinase (PI 3-kinase) p85 alpha, that are physically complexed to the CD4 molecule PubMed
Envelope surface glycoprotein gp160, precursor env HIV-1 gp160 disrupts the association between phospholipase C gamma-1 and phosphoinositide 3 kinase (PI3-kinase), and this effect is dependent on PI3-kinase activity PubMed
env PI3-kinase activation induced by HIV-1 gp160 leads to downregulation of LFA-1-mediated T cell adhesion to B cells PubMed
Nef nef HIV-1 Nef synergizes with KSHV oncoprotein K1 to activate PI3K/AKT/mTOR signaling pathway, and induces cell proliferation and microtubule formation in endothelial cells PubMed
nef Diaminoquinoxaline benzenesulfonamide (DQBS) treatment reduces the amount of both HCK and the p85 regulatory subunit of PI3K associated with HIV-1 Nef and completely blocks Nef-dependent activation of ZAP-70 PubMed
nef In the context of Nef-associated kinase complex (NAKC), hnRNP-K interacts with HIV-1 Nef and recruits LCK, PKCdelta, and PI-3 kinase PubMed
nef The presence of HIV-1 Nef in Jurkat cells stimulated with a combination of PMA and anti-CD28 upregulates the levels of PI3K production PubMed
nef Downregulation of cell surface major histocompatibility complex class I (MHC-I) protein expression by HIV-1 Nef depends on a phosphoinositide 3-kinase (PI3K)-regulated signaling pathway, suggesting an interaction between Nef and PI3K PubMed
nef The association of phosphatidylinositol (PI) 3-kinase with platelet-derived growth factor (PDGF) activated receptor was downregulated by HIV-1 nef expression PubMed
nef HIV-1 Nef binds to the regulatory subunit (p85) of phosphatidylinositol-3-kinase (PI3K) in a manner that depends on the C-terminus of p85 and Nef PubMed
Tat tat HIV-1 Tat induces phosphorylation of PI3K, AKT, PTEN, and GSK-3beta activating PI3K and AKT and inactivating PTEN and GSK-3beta in vIL-6 expressing cells PubMed
tat HIV-1 Tat-induced upregulation of IDO production requires the activity of IFN-gamma signaling pathway such as JAK and PI3K in human monocyte derived-dendritic cells PubMed
tat Arctigenin regulates the upstream PI3K enzyme from converting PIP2 to PIP3 in Tat-expressing CHME5 cells PubMed
tat HIV-1 Tat in combination with KSHV kaposin A activates the MEK/ERK, STAT3, and PI3K/Akt signals in NIH3T3 cells PubMed
tat Phosphatidylinositol 3-kinase/Akt signaling pathway is involved in HIV-1 Tat-induced NADPH oxidase stimulation and LTR transactivation PubMed
tat HIV-1 Tat-mediated cytopathic changes in human brain micro vascular endothelial cells involves its interaction with phosphatidylinositol 3-kinase (PI3K) PubMed
tat Pro-survival effects of intracellular HIV-1 Tat in a microglial cell line is attributed to activation of the PI-3-kinase (PI3K)/Akt pathway via decreasing expression of PTEN, a negative regulator of the PI-3-K pathway PubMed
tat HIV-1 Tat activates phosphatidylinositol 3-kinase (PI3K), leading to the activation of Akt/PKB, decreased levels of cAMP and CREB phosphorylation, and the protection of cells from apoptosis PubMed
tat Phosphatidylinositol 3-kinase inhibits HIV-1 Tat-mediated transactivation of the HIV-1 LTR promoter by affecting the formation of the Tat-associated kinase transactivating complex PubMed
tat HIV-1 Tat induced release of MCP-1 from human lung microvascular endothelial cells involves an interaction between Tat and PI3 kinase PubMed
tat Activation of protein kinase C-epsilon by HIV-1 Tat involves an interaction with PI 3-kinase PubMed

Go to the HIV-1, Human Interaction Database

Pathways from PubChem

Interactions

Products Interactant Other Gene Complex Source Pubs Description

General gene information

Markers

Homology

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables 1-phosphatidylinositol-3-kinase regulator activity IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
enables ErbB-3 class receptor binding IDA
Inferred from Direct Assay
more info
PubMed 
enables insulin binding IDA
Inferred from Direct Assay
more info
PubMed 
enables insulin receptor binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables insulin receptor substrate binding IEA
Inferred from Electronic Annotation
more info
 
enables insulin-like growth factor receptor binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables neurotrophin TRKA receptor binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables phosphatidylinositol 3-kinase binding ISS
Inferred from Sequence or Structural Similarity
more info
 
enables phosphatidylinositol 3-kinase regulator activity ISS
Inferred from Sequence or Structural Similarity
more info
 
enables phosphatidylinositol 3-kinase regulatory subunit binding IEA
Inferred from Electronic Annotation
more info
 
enables phosphotyrosine residue binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables protein binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables protein heterodimerization activity IEA
Inferred from Electronic Annotation
more info
 
enables protein phosphatase binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables transcription factor binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables transmembrane receptor protein tyrosine kinase adaptor activity ISS
Inferred from Sequence or Structural Similarity
more info
 
Process Evidence Code Pubs
involved_in B cell differentiation IEA
Inferred from Electronic Annotation
more info
 
involved_in cellular glucose homeostasis ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in cellular response to UV IEA
Inferred from Electronic Annotation
more info
 
involved_in cellular response to insulin stimulus ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in extrinsic apoptotic signaling pathway via death domain receptors IEA
Inferred from Electronic Annotation
more info
 
involved_in growth hormone receptor signaling pathway IDA
Inferred from Direct Assay
more info
PubMed 
involved_in insulin receptor signaling pathway IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
involved_in insulin-like growth factor receptor signaling pathway IDA
Inferred from Direct Assay
more info
PubMed 
involved_in insulin-like growth factor receptor signaling pathway IPI
Inferred from Physical Interaction
more info
PubMed 
involved_in intrinsic apoptotic signaling pathway in response to DNA damage IEA
Inferred from Electronic Annotation
more info
 
involved_in negative regulation of apoptotic process IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in negative regulation of cell-matrix adhesion IEA
Inferred from Electronic Annotation
more info
 
involved_in negative regulation of osteoclast differentiation IEA
Inferred from Electronic Annotation
more info
 
involved_in negative regulation of stress fiber assembly ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in phosphatidylinositol 3-kinase signaling IDA
Inferred from Direct Assay
more info
PubMed 
involved_in phosphatidylinositol 3-kinase signaling IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in phosphatidylinositol phosphate biosynthetic process IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
involved_in phosphatidylinositol phosphate biosynthetic process ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in positive regulation of RNA splicing IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in positive regulation of cell migration IEA
Inferred from Electronic Annotation
more info
 
involved_in positive regulation of endoplasmic reticulum unfolded protein response IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in positive regulation of filopodium assembly ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in positive regulation of focal adhesion disassembly ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in positive regulation of glucose import ISS
Inferred from Sequence or Structural Similarity
more info
PubMed 
involved_in positive regulation of lamellipodium assembly ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in positive regulation of protein import into nucleus IDA
Inferred from Direct Assay
more info
PubMed 
involved_in positive regulation of protein localization to plasma membrane ISS
Inferred from Sequence or Structural Similarity
more info
PubMed 
involved_in positive regulation of transcription by RNA polymerase II IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in positive regulation of transcription by RNA polymerase II ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in positive regulation of tumor necrosis factor production IEA
Inferred from Electronic Annotation
more info
 
involved_in protein import into nucleus IEA
Inferred from Electronic Annotation
more info
 
involved_in protein phosphorylation IEA
Inferred from Electronic Annotation
more info
 
involved_in protein stabilization IDA
Inferred from Direct Assay
more info
PubMed 
involved_in regulation of insulin receptor signaling pathway IEA
Inferred from Electronic Annotation
more info
 
involved_in regulation of phosphatidylinositol 3-kinase activity IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
involved_in regulation of phosphatidylinositol 3-kinase activity ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in response to endoplasmic reticulum stress IDA
Inferred from Direct Assay
more info
PubMed 
involved_in response to endoplasmic reticulum stress ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in substrate adhesion-dependent cell spreading ISS
Inferred from Sequence or Structural Similarity
more info
 
Component Evidence Code Pubs
located_in cell-cell junction IEA
Inferred from Electronic Annotation
more info
 
located_in cis-Golgi network IEA
Inferred from Electronic Annotation
more info
 
located_in cytoplasm IDA
Inferred from Direct Assay
more info
PubMed 
located_in cytosol TAS
Traceable Author Statement
more info
 
located_in membrane HDA PubMed 
located_in nucleus ISS
Inferred from Sequence or Structural Similarity
more info
 
located_in perinuclear endoplasmic reticulum membrane IEA
Inferred from Electronic Annotation
more info
 
located_in perinuclear region of cytoplasm ISS
Inferred from Sequence or Structural Similarity
more info
 
part_of phosphatidylinositol 3-kinase complex IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
part_of phosphatidylinositol 3-kinase complex ISS
Inferred from Sequence or Structural Similarity
more info
 
part_of phosphatidylinositol 3-kinase complex, class IA ISS
Inferred from Sequence or Structural Similarity
more info
 
located_in plasma membrane TAS
Traceable Author Statement
more info
 

General protein information

Preferred Names
phosphatidylinositol 3-kinase regulatory subunit alpha
Names
PI3-kinase subunit p85-alpha
PI3K regulatory subunit alpha
phosphatidylinositol 3-kinase 85 kDa regulatory subunit alpha
phosphatidylinositol 3-kinase, regulatory subunit, polypeptide 1 (p85 alpha)
phosphatidylinositol 3-kinase-associated p-85 alpha
phosphoinositide-3-kinase regulatory subunit alpha
phosphoinositide-3-kinase, regulatory subunit 1 (alpha)
ptdIns-3-kinase regulatory subunit alpha

NCBI Reference Sequences (RefSeq)

NEW Try the new Transcript table

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

Genomic

  1. NG_012849.2 RefSeqGene

    Range
    5001..91066
    Download
    GenBank, FASTA, Sequence Viewer (Graphics), LRG_453

mRNA and Protein(s)

  1. NM_001242466.2NP_001229395.1  phosphatidylinositol 3-kinase regulatory subunit alpha isoform 4

    Status: REVIEWED

    Description
    Transcript Variant: This variant (4) differs in the 5' UTR and coding sequence compared to variant 1. The resulting isoform (4) has a shorter N-terminus compared to isoform 1.
    Source sequence(s)
    AC016564, AF279367, AK094785, CA427864
    Consensus CDS
    CCDS56374.1
    UniProtKB/Swiss-Prot
    P27986
    Related
    ENSP00000430098.1, ENST00000523872.1
    Conserved Domains (4) summary
    cd09930
    Location:254357
    SH2_cSH2_p85_like; C-terminal Src homology 2 (cSH2) domain found in p85
    cd12924
    Location:77237
    iSH2_PIK3R1; Inter-Src homology 2 (iSH2) helical domain of Class IA Phosphoinositide 3-kinase Regulatory subunit 1, PIK3R1, also called p85alpha
    pfam16454
    Location:76235
    PI3K_P85_iSH2; Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain
    cl15255
    Location:172
    SH2; Src homology 2 (SH2) domain
  2. NM_181504.4NP_852556.2  phosphatidylinositol 3-kinase regulatory subunit alpha isoform 2

    See identical proteins and their annotated locations for NP_852556.2

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2) uses an alternate in-frame exon in the 5' coding region, compared to variant 1. The encoded isoform (2) has a distinct N-terminus, compared to isoform 1.
    Source sequence(s)
    AC016564, AK223613, CA427864, DA487709
    Consensus CDS
    CCDS3995.1
    UniProtKB/Swiss-Prot
    P27986
    Related
    ENSP00000338554.5, ENST00000336483.9
    Conserved Domains (4) summary
    cd09930
    Location:347450
    SH2_cSH2_p85_like; C-terminal Src homology 2 (cSH2) domain found in p85
    cd09942
    Location:55165
    SH2_nSH2_p85_like; N-terminal Src homology 2 (nSH2) domain found in p85
    cd12924
    Location:170330
    iSH2_PIK3R1; Inter-Src homology 2 (iSH2) helical domain of Class IA Phosphoinositide 3-kinase Regulatory subunit 1, PIK3R1, also called p85alpha
    pfam16454
    Location:169328
    PI3K_P85_iSH2; Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain
  3. NM_181523.3NP_852664.1  phosphatidylinositol 3-kinase regulatory subunit alpha isoform 1

    See identical proteins and their annotated locations for NP_852664.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) encodes the longest isoform (1) of this protein.
    Source sequence(s)
    AC016564, BC094795, CA427864, CT003423
    Consensus CDS
    CCDS3993.1
    UniProtKB/Swiss-Prot
    P27986
    Related
    ENSP00000428056.1, ENST00000521381.6
    Conserved Domains (5) summary
    cd09930
    Location:617720
    SH2_cSH2_p85_like; C-terminal Src homology 2 (cSH2) domain found in p85
    cd09942
    Location:325435
    SH2_nSH2_p85_like; N-terminal Src homology 2 (nSH2) domain found in p85
    cd11910
    Location:579
    SH3_PI3K_p85alpha; Src Homology 3 domain of the p85alpha regulatory subunit of Class IA Phosphatidylinositol 3-kinases
    cd12924
    Location:440600
    iSH2_PIK3R1; Inter-Src homology 2 (iSH2) helical domain of Class IA Phosphoinositide 3-kinase Regulatory subunit 1, PIK3R1, also called p85alpha
    cd04388
    Location:114302
    RhoGAP_p85; RhoGAP_p85: RhoGAP (GTPase-activator protein [GAP] for Rho-like small GTPases) domain present in the p85 isoforms of the regulatory subunit of the class IA PI3K (phosphatidylinositol 3'-kinase). This domain is also called Bcr (breakpoint cluster region ...
  4. NM_181524.2NP_852665.1  phosphatidylinositol 3-kinase regulatory subunit alpha isoform 3

    See identical proteins and their annotated locations for NP_852665.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (3) uses an alternate in-frame exon in the 5' coding region, compared to variant 1. The encoded isoform (3) has a distinct N-terminus, compared to isoform 1.
    Source sequence(s)
    AC016564, AF279367, CA427864
    Consensus CDS
    CCDS3994.1
    UniProtKB/Swiss-Prot
    P27986
    Related
    ENSP00000323512.8, ENST00000320694.12
    Conserved Domains (4) summary
    cd09930
    Location:317420
    SH2_cSH2_p85_like; C-terminal Src homology 2 (cSH2) domain found in p85
    cd09942
    Location:25135
    SH2_nSH2_p85_like; N-terminal Src homology 2 (nSH2) domain found in p85
    cd12924
    Location:140300
    iSH2_PIK3R1; Inter-Src homology 2 (iSH2) helical domain of Class IA Phosphoinositide 3-kinase Regulatory subunit 1, PIK3R1, also called p85alpha
    pfam16454
    Location:139298
    PI3K_P85_iSH2; Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain

RefSeqs of Annotated Genomes: Homo sapiens Updated Annotation Release 109.20210514

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p13 Primary Assembly

Genomic

  1. NC_000005.10 Reference GRCh38.p13 Primary Assembly

    Range
    68215737..68301821
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_005248542.3XP_005248599.1  phosphatidylinositol 3-kinase regulatory subunit alpha isoform X1

    See identical proteins and their annotated locations for XP_005248599.1

    UniProtKB/Swiss-Prot
    P27986
    Related
    ENSP00000429277.1, ENST00000521657.5
    Conserved Domains (5) summary
    cd09930
    Location:617720
    SH2_cSH2_p85_like; C-terminal Src homology 2 (cSH2) domain found in p85
    cd09942
    Location:325435
    SH2_nSH2_p85_like; N-terminal Src homology 2 (nSH2) domain found in p85
    cd11910
    Location:579
    SH3_PI3K_p85alpha; Src Homology 3 domain of the p85alpha regulatory subunit of Class IA Phosphatidylinositol 3-kinases
    cd12924
    Location:440600
    iSH2_PIK3R1; Inter-Src homology 2 (iSH2) helical domain of Class IA Phosphoinositide 3-kinase Regulatory subunit 1, PIK3R1, also called p85alpha
    cd04388
    Location:114302
    RhoGAP_p85; RhoGAP_p85: RhoGAP (GTPase-activator protein [GAP] for Rho-like small GTPases) domain present in the p85 isoforms of the regulatory subunit of the class IA PI3K (phosphatidylinositol 3'-kinase). This domain is also called Bcr (breakpoint cluster region ...
  2. XM_017009585.2XP_016865074.1  phosphatidylinositol 3-kinase regulatory subunit alpha isoform X1

    UniProtKB/Swiss-Prot
    P27986
    Conserved Domains (5) summary
    cd09930
    Location:617720
    SH2_cSH2_p85_like; C-terminal Src homology 2 (cSH2) domain found in p85
    cd09942
    Location:325435
    SH2_nSH2_p85_like; N-terminal Src homology 2 (nSH2) domain found in p85
    cd11910
    Location:579
    SH3_PI3K_p85alpha; Src Homology 3 domain of the p85alpha regulatory subunit of Class IA Phosphatidylinositol 3-kinases
    cd12924
    Location:440600
    iSH2_PIK3R1; Inter-Src homology 2 (iSH2) helical domain of Class IA Phosphoinositide 3-kinase Regulatory subunit 1, PIK3R1, also called p85alpha
    cd04388
    Location:114302
    RhoGAP_p85; RhoGAP_p85: RhoGAP (GTPase-activator protein [GAP] for Rho-like small GTPases) domain present in the p85 isoforms of the regulatory subunit of the class IA PI3K (phosphatidylinositol 3'-kinase). This domain is also called Bcr (breakpoint cluster region ...
  3. XM_017009586.1XP_016865075.1  phosphatidylinositol 3-kinase regulatory subunit alpha isoform X2

  4. XM_011543493.3XP_011541795.1  phosphatidylinositol 3-kinase regulatory subunit alpha isoform X3

    Conserved Domains (5) summary
    cd09930
    Location:508611
    SH2_cSH2_p85_like; C-terminal Src homology 2 (cSH2) domain found in p85
    cd09942
    Location:216326
    SH2_nSH2_p85_like; N-terminal Src homology 2 (nSH2) domain found in p85
    cd12924
    Location:331491
    iSH2_PIK3R1; Inter-Src homology 2 (iSH2) helical domain of Class IA Phosphoinositide 3-kinase Regulatory subunit 1, PIK3R1, also called p85alpha
    cd04388
    Location:5193
    RhoGAP_p85; RhoGAP_p85: RhoGAP (GTPase-activator protein [GAP] for Rho-like small GTPases) domain present in the p85 isoforms of the regulatory subunit of the class IA PI3K (phosphatidylinositol 3'-kinase). This domain is also called Bcr (breakpoint cluster region ...
    pfam16454
    Location:330489
    PI3K_P85_iSH2; Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain
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