Source: hRBCD ; ID: IPI00020124
Marked as 'Membrane associated protein'
Confidence: high (present in two of the MS resources) Search PubMed for
(RBC AND this entry)

Gene names: PI4K2A
Protein names and data: P4K2A_HUMAN , Phosphatidylinositol 4-kinase type 2-alpha; , Phosphatidylinositol 4-kinase type II-alpha Lenght: 479 a.a.
Mass: 54022 Da
fasta formatted sequence

Function: Together with PI4K2B and the type III PI4Ks (PIK4CA and PIK4CB) it contributes to the overall PI4-kinase activity of the cell. 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 (By similarity). This lipid kinase is the major phosphatidylinositol 4-phosphate (PI4P) producer in the Golgi apparatus, it generates more than 50% of this molecule which is essential for the identity of the organelle, protein sorting and membrane trafficking.
Catalytic activity: ATP + 1-phosphatidyl-1D-myo-inositol = ADP + 1-phosphatidyl-1D-myo-inositol 4-phosphate.
Cellular location: Cytoplasm. Golgi apparatus, trans-Golgi network membrane; Lipid-anchor. Membrane raft. Cell projection, dendrite (By similarity). Cell junction, synapse, presynaptic cell membrane (By similarity). Cell junction, synapse, synaptosome (By similarity). Mitochondrion (By similarity). Endosome (By similarity). Cytoplasmic vesicle (By similarity). Note=Localized in neuronal cell body. Transported from neuronal cell body to neuron projections in a BLOC-1- and AP-3-complexes-dependent manner. Enriched in neurite tips and neuron projections in a BLOC- 1- and AP-3-complexes-dependent manner (By similarity). Found in subdomains of the plasma membrane termed non-caveolar membrane rafts.
Tissue specificity: Widely expressed. Highest expression is observed in kidney, brain, heart, skeletal muscle, and placenta and lowest expression is observed in colon, thymus, and small intestine.

Database cross-references

UniProt: Q9BTU6
Ensembl: ENST00000370631
MIM: 609763
neXtProt: NX_Q9BTU6
Antibodypedia: Q9BTU6 (may not find the protein thus also not any antibody)
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