Entrez Summary: This gene encodes a member of the type II PI4 kinase protein family. The encoded protein is primarily cytosolic and contributes to overall PI4-kinase activity along with other protein family members. This protein is involved in early T cell activation. [provided by RefSeq, Dec 2016].
UniProt Summary: Together with PI4K2A and the type III PI4Ks (PIK4CA and PIK4CB) it contributes to the overall PI4-kinase activity of the cell. This contribution may be especially significant in plasma membrane, endosomal and Golgi compartments. The phosphorylation of phosphatidylinositol (PI) to PI4P is the first committed step in the generation of phosphatidylinositol 4,5-bisphosphate (PIP2), a precursor of the second messenger inositol 1,4,5-trisphosphate (InsP3). Contributes to the production of InsP3 in stimulated cells and is likely to be involved in the regulation of vesicular trafficking. {ECO:0000269|PubMed:11923287}.
Pfam DomainsGO Terms
Pfam Domains
PI3 PI4 kinase
GO Terms
1-phosphatidylinositol 4-kinase activity
phosphatidylinositol phosphorylation
lipid phosphorylation
endosome organization
phosphatidylinositol biosynthetic process
Golgi organization
phosphatidylinositol metabolic process
trans-Golgi network
lipid modification
glycerophospholipid biosynthetic process
glycerolipid biosynthetic process
phospholipid biosynthetic process
endosome
vesicle organization
glycerophospholipid metabolic process
phospholipid metabolic process
glycerolipid metabolic process
endomembrane system organization
organophosphate biosynthetic process
lipid biosynthetic process
organophosphate metabolic process
cellular lipid metabolic process
lipid metabolic process
phosphorylation
ATP binding
membrane
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)