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PIK3R3
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  • PIK3R3
INTERACTION
INOSITOL PHOSPHATE METABOLISM
Protein interactions
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.

PIK3R3
Gene descriptioni

Full gene name according to HGNC.

Phosphoinositide-3-kinase regulatory subunit 3
Protein classi

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

Cancer-related genes
Metabolic 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
Number of transcriptsi

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

5
HUMAN PROTEIN ATLAS INFORMATIONi

Summary of data presented in the Tissue section, with a representative image of protein expression (left) and an interactive chart showing the tissue-specific mRNA expression (right). The image and the chart are clickable and will redirect to more Tissue data.
This section contains information regarding the expression profiles of protein-coding genes in normal human tissue, both on the mRNA and protein level. The protein expression data is derived from antibody-based protein profiling using immunohistochemistry.

Tissue expression
cluster (RNA)i

The RNA data was used to cluster genes according to their expression across tissues. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity.

Testis - Transcription (mainly)
Tissue specificity (RNA)i

The RNA specificity category is based on mRNA expression levels in the consensus dataset which is calculated from the RNA expression levels in samples from HPA and GTEX. The categories include: tissue enriched, group enriched, tissue enhanced, low tissue specificity and not detected.

Low tissue specificity
Tau specificity score (RNA)i

Tau specificity score is a numerical indicator of the specificity of the gene expression across cells or tissues. The value ranges from 0 and 1, where 0 indicates identical expression across all cells/tissue types, while 1 indicates expression in a single cell/tissue type.

0.35
Tissue distribution (RNA)i

The RNA distribution category is based on mRNA expression levels in the analyzed samples based on a combination of data from HPA and GTEX. The categories include: detected in all, detected in many, detected in some, detected in single and not detected.

Detected in many
Protein evidencei

Evidence score for genes based on UniProt protein existence (UniProt evidence); neXtProt protein existence (neXtProt evidence);and a Human Protein Atlas antibody- or RNA based score (HPA evidence). The avaliable scores are evidence at protein level, evidence at transcript level, no evidence, or not avaliable.

Read more
Evidence at protein level
Subcellular locationi

Main subcellular location based on data generated in the subcellular section of the Human Protein Atlas.

Localized to the Vesicles In addition localized to the Nucleoplasm
Secretome annotationi

All genes with at least one predicted secreted isoform have been annotated and classified with the aim to determine if the corresponding protein(s) are:

  • secreted into blood
  • locally secreted
  • or actually being attached to membrane or retained in intracellular locations like mitochondria, endoplasmatic reticulum (ER), Golgi apparatus or lysosomes.

Not available
INTERACTION SUMMARYi

In the Interaction summary a network plot of the gene's interaction partners is shown with nodes representing genes and edges representing the interaction type and the confidence (MI score) for the interaction. The type of interaction (direct interaction or physical association) is reflected by the colour of the edges, while the confidence of the interaction is reflected by the thickness of the edges. Scores larger than 0.6 (high confidence) have a thicker line than scores between 0.45 and 0.6 (medium confidence).

The highlight bar in the top of the plot can be used to colour the nodes according to subcellular location (based on data in the Subcellular section), predicted location (based on signalpeptide and transmembrane region predictions), tissue specificity (based on RNA tissue expression profiles) or proteinclass.

Nodes can also be highlighted using the top left Filter option in which a query of choice can be built to for example label all nodes that are tissue enriched in both human and mouse brain or those that belongs to a certain tissue expression cluster. The expression cluster for the gene is stated in the box Human Protein Atlas Information above the network plot. Click on Filter in the top left in the plot to find the query builder and some example queries.

Highlight:
Off
Subcell location
Predicted location
Tissue specificity
Protein class

Filter menu »
Fields »
e.g. Brain enriched, Localized to mitochondria, Testis - Transcription

Field
Term
Gene name
Class
Subclass
Class
Keyword
Chromosome
External id
Tissue
Cell type
Expression
Patient ID
Tissue
Category
Cluster
Reliability
Brain region
Category
Brain region
Category
Brain region
Category
Cluster
Reliability
Cell type
Category
Cluster
Tissue
Cell type
Enrichment
Cancer
Prognosis
Cancer
Category
Cell type
Category
Cell lineage
Category
Cluster
Annotation
Disease
Location
Searches
Location
Cell line
Type
Phase
Reliability
Cancer type
Category
Cluster
Interacting gene
Number of interactions
Pathway
Category
Score
Score
Score
Validation
Validation
Validation
Validation
Antibodies
Protein structure
In atlas
Column


Number of interactions: 70 View all protein interaction data in IntAct
Interaction Interaction type Confidence MI score # Interactions
PIK3CA Physical association High 0.8 10
EGFR Direct interaction High 0.76 270
GRB2 Physical association High 0.67 165
PIK3CD Physical association High 0.67 2
CEP19 Physical association High 0.67 41
DRAP1 Physical association High 0.67 15
HTT Physical association High 0.67 665
PIK3CB Physical association High 0.66 5
TP53 Direct interaction High 0.64 157
PTK2 Physical association High 0.63 24
CRK Physical association High 0.62 54
SRC Physical association High 0.62 56
TSPAN2 Direct interaction Medium 0.59 34
ERBB2 Direct interaction Medium 0.59 49
ERBB3 Direct interaction Medium 0.59 19
CBL Physical association Medium 0.57 34
CRYBA2 Physical association Medium 0.57 21
FRS3 Physical association Medium 0.57 77
IRS1 Physical association Medium 0.57 8
METTL27 Physical association Medium 0.57 41
OTUD7B Physical association Medium 0.57 13
PELI3 Physical association Medium 0.57 1
RBP7 Physical association Medium 0.57 3
SH2D2A Physical association Medium 0.57 18
SOCS4 Physical association Medium 0.57 14
SPSB2 Physical association Medium 0.57 8
ANTKMT Physical association Medium 0.56 10
BLK Physical association Medium 0.56 22
BLZF1 Physical association Medium 0.56 84
C9orf24 Physical association Medium 0.56 22
CCDC89 Physical association Medium 0.56 4
ENKD1 Physical association Medium 0.56 159
FNDC8 Physical association Medium 0.56 5
ITGB3BP Physical association Medium 0.56 28
KIAA0408 Physical association Medium 0.56 24
LAP3 Physical association Medium 0.56 8
NAB2 Physical association Medium 0.56 62
NEBL Physical association Medium 0.56 28
PBX4 Physical association Medium 0.56 60
PLAAT4 Physical association Medium 0.56 2
PLEKHF2 Physical association Medium 0.56 117
PRKAR1B Physical association Medium 0.56 55
RUSC1 Physical association Medium 0.56 71
SERTAD2 Physical association Medium 0.56 15
SPATA32 Physical association Medium 0.56 2
SSBP4 Physical association Medium 0.56 5
STAT5B Physical association Medium 0.56 15
TASOR2 Physical association Medium 0.56 34
TNNI1 Physical association Medium 0.56 29
YES1 Physical association Medium 0.56 44
ZBTB18 Physical association Medium 0.56 5
ZNF620 Physical association Medium 0.56 51
IGF1R Physical association Medium 0.54 21
OLIG1 Physical association Medium 0.51 6
WDFY3 Physical association Medium 0.51 10
ANKS1A Physical association Medium 0.49 3
BTK Physical association Medium 0.49 12
CCDC14 Physical association Medium 0.49 5
CLNK Physical association Medium 0.49 9
E2F6 Physical association Medium 0.49 6
HSH2D Physical association Medium 0.49 6
IQUB Physical association Medium 0.49 56
MECOM Physical association Medium 0.49 4
NCK1 Physical association Medium 0.49 24
PCDHB5 Physical association Medium 0.49 2
PELO Physical association Medium 0.49 20
PPARA Physical association Medium 0.49 18
STAT3 Physical association Medium 0.49 55
VCP Physical association Medium 0.49 48
ZNF281 Physical association Medium 0.49 4
Show allShow less
METABOLIC SUMMARYi

In this summary the pathway/subsystems to which the gene belongs is shown together with the associated cellular compartment for the reactions based on metabolite information. The number of proteins and metabolites in the pathway is shown as well as the number of reactions for the selected gene. By clicking on a pathway in the summary table the associated metabolic network map is shown, together with a gene-tissue heatmap that shows the expression of genes in that pathway in different tissues.

Gene PIK3R3 is associated with 1 reactions in 1 different subsystems, and present in the compartments: Cytosol. Provided by metabolicatlas.org
Pathway / Subsystem Subsystem-associated compartments # proteins # metabolites # reactions for
this protein
Inositol phosphate metabolism Cytosol, Nucleus, Endoplasmic reticulum, Golgi apparatus 101 36 1

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