Phosphatidylinositol 4-kinase alpha pseudogene 1 (PI4KAP1)

Phosphatidylinositol 4-kinase alpha pseudogene 1 (PI4KAP1) is a human pseudogene located on chromosome 22q11.2 that is highly homologous to the catalytically active phosphatidylinositol 4-kinase alpha (PI4KA) gene, but PI4KAP1 itself does not encode a functional enzyme. PI4KAP1 represents a partial, nonfunctional genetic copy containing segments of the PI4KA gene, particularly coding for part of the catalytic domain. No evidence exists that PI4KAP1 produces an active protein, nor does it participate in biological pathways, disease roles, or serve as a drug target or biomarker. This locus is found in a region of known genetic instability; while PI4KA has established roles in lipid signaling and disease, PI4KAP1 itself is only cataloged as a pseudogene and is not a functional therapeutic target. Key context and supporting details: - PI4KAP1 is officially listed as a pseudogene, not a protein-coding gene, and does not produce a functional phosphatidylinositol 4-kinase enzyme. - It is found at human chromosome 22q11.2, a locus notable for chromosomal instability but is catalytically inactive itself. - Functional and disease data instead apply to its parent gene, PI4KA (phosphatidylinositol 4-kinase alpha), which is an essential lipid kinase implicated in phosphoinositide signaling and several human diseases, but not to PI4KAP1. - The presence of PI4KAP1 may contribute to transcript heterogeneity in cells from this region, but it does not encode an active or druggable protein. - There are no described drugs, mechanisms of action, biomarkers, or safety concerns linked to PI4KAP1, as it is not biologically active. - Most available aliases are minor variants of its full name, corresponding to pseudogene nomenclature, not functional targets. Corrections/clarifications: - The request's target, PI4KAP1, is sometimes confused with the functional enzyme PI4KA; only the latter is a relevant therapeutic target. - As a pseudogene, PI4KAP1 does not fit drug targeting, biomarker, or molecular classification schemes for active receptors, enzymes, or transporters, and is not a therapeutic target.

Other names

phosphatidylinositol 4-kinase, catalytic, alpha pseudogene 1PI4KA pseudogene 1phosphatidylinositol 4-kinase, catalytic, alpha polypeptide pseudogene 1PI4KAP1