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PIK3R4
HPA
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  • PIK3R4
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.

PIK3R4
Synonyms p150, VPS15
Gene descriptioni

Full gene name according to HGNC.

Phosphoinositide-3-kinase regulatory subunit 4
Protein classi

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

Enzymes
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 3
Cytoband q22.1
Chromosome location (bp) 130678934 - 130746829
Number of transcriptsi

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

4
Ensembl ENSG00000196455 (version 109)
Entrez gene 30849
HGNC HGNC:8982
UniProt Q99570 (UniProt - Evidence at protein level)
neXtProt NX_Q99570
GeneCards PIK3R4
Antibodypedia PIK3R4 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Regulatory subunit of the PI3K complex that mediates formation of phosphatidylinositol 3-phosphate; different complex forms are believed to play a role in multiple membrane trafficking pathways: PI3KC3-C1 is involved in initiation of autophagosomes and PI3KC3-C2 in maturation of autophagosomes and endocytosis. Involved in regulation of degradative endocytic trafficking and cytokinesis, probably in the context of PI3KC3-C2 1.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Kinase, Serine/threonine-protein kinase, Transferase
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

ATP-binding, Nucleotide-binding
Gene summary (Entrez)i

Useful information about the gene from Entrez

Predicted to enable protein serine/threonine kinase activity. Involved in positive regulation of phosphatidylinositol 3-kinase activity; receptor catabolic process; and regulation of cytokinesis. Located in late endosome and microtubule cytoskeleton. [provided by Alliance of Genome Resources, Apr 2022]... 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)
PIK3R4-201
ENSP00000349205
ENST00000356763
Q99570
[Direct mapping] Phosphoinositide 3-kinase regulatory subunit 4
Show all
Enzymes
   ENZYME proteins
   Transferases
   Kinases
   MEMSAT3 predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000166 [nucleotide binding]
GO:0004672 [protein kinase activity]
GO:0004674 [protein serine/threonine kinase activity]
GO:0005515 [protein binding]
GO:0005524 [ATP binding]
GO:0005768 [endosome]
GO:0005770 [late endosome]
GO:0005776 [autophagosome]
GO:0005829 [cytosol]
GO:0005930 [axoneme]
GO:0005942 [phosphatidylinositol 3-kinase complex]
GO:0006468 [protein phosphorylation]
GO:0006622 [protein targeting to lysosome]
GO:0006623 [protein targeting to vacuole]
GO:0010506 [regulation of autophagy]
GO:0015630 [microtubule cytoskeleton]
GO:0016020 [membrane]
GO:0016236 [macroautophagy]
GO:0016241 [regulation of macroautophagy]
GO:0016301 [kinase activity]
GO:0016310 [phosphorylation]
GO:0016740 [transferase activity]
GO:0030242 [autophagy of peroxisome]
GO:0030670 [phagocytic vesicle membrane]
GO:0031410 [cytoplasmic vesicle]
GO:0032465 [regulation of cytokinesis]
GO:0032801 [receptor catabolic process]
GO:0034271 [phosphatidylinositol 3-kinase complex, class III, type I]
GO:0034272 [phosphatidylinositol 3-kinase complex, class III, type II]
GO:0035032 [phosphatidylinositol 3-kinase complex, class III]
GO:0036092 [phosphatidylinositol-3-phosphate biosynthetic process]
GO:0042149 [cellular response to glucose starvation]
GO:0043231 [intracellular membrane-bounded organelle]
GO:0043552 [positive regulation of phosphatidylinositol 3-kinase activity]
GO:0045022 [early endosome to late endosome transport]
GO:0045324 [late endosome to vacuole transport]
GO:0071561 [nucleus-vacuole junction]
GO:0097352 [autophagosome maturation]
GO:0106310 [protein serine kinase activity]
Show all
1358 aa
153.1 kDa
No 0
PIK3R4-203
ENSP00000424274
ENST00000507330
D6RBB7
[Direct mapping] Phosphoinositide 3-kinase regulatory subunit 4
Show all
   MEMSAT3 predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004674 [protein serine/threonine kinase activity]
GO:0016236 [macroautophagy]
GO:0045324 [late endosome to vacuole transport]
Show all
129 aa
14.8 kDa
No 0
PIK3R4-204
ENSP00000427302
ENST00000508273
D6RJ98
[Direct mapping] Phosphoinositide 3-kinase regulatory subunit 4
Show all
   MEMSAT3 predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004674 [protein serine/threonine kinase activity]
GO:0016236 [macroautophagy]
GO:0045324 [late endosome to vacuole transport]
Show all
193 aa
21.8 kDa
No 0
PIK3R4-207
ENSP00000422767
ENST00000512430
D6RAC3
[Direct mapping] Phosphoinositide 3-kinase regulatory subunit 4
Show all
   MEMSAT3 predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004674 [protein serine/threonine kinase activity]
GO:0016236 [macroautophagy]
GO:0045324 [late endosome to vacuole transport]
Show all
126 aa
14.5 kDa
No 0

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