Harmonizome 3.0

3-phosphoinositide dependent protein kinase 2, pseudogene

Predicted to enable protein serine/threonine kinase activity. Predicted to be involved in intracellular signal transduction. Predicted to be located in cytoplasm and membrane. [provided by Alliance of Genome Resources, Mar 2025]

transmembrane phosphoinositide 3-phosphatase and tensin homolog 2

TPIP is a member of a large class of membrane-associated phosphatases with substrate specificity for the 3-position phosphate of inositol phospholipids.[supplied by OMIM, Jul 2002]

phosphoinositide-3-kinase, regulatory subunit 6

Phosphoinositide 3-kinase gamma is a lipid kinase that produces the lipid second messenger phosphatidylinositol 3,4,5-trisphosphate. The kinase is composed of a catalytic subunit and one of several regulatory subunits, and is chiefly activated by G protein-coupled receptors. This gene encodes a regulatory subunit, and is distantly related to the phosphoinositide-3-kinase, regulatory subunit 5 gene which is located adjacent to this gene on chromosome 7. The orthologous protein in the mouse binds to both the catalytic subunit and to G(beta/gamma), and mediates activation of the kinase subunit downstream of G protein-coupled receptors. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

phosphoinositide-3-kinase, regulatory subunit 5

Phosphatidylinositol 3-kinases (PI3Ks) phosphorylate the inositol ring of phosphatidylinositol at the 3-prime position, and play important roles in cell growth, proliferation, differentiation, motility, survival and intracellular trafficking. The PI3Ks are divided into three classes: I, II and III, and only the class I PI3Ks are involved in oncogenesis. This gene encodes the 101 kD regulatory subunit of the class I PI3K gamma complex, which is a dimeric enzyme, consisting of a 110 kD catalytic subunit gamma and a regulatory subunit of either 55, 87 or 101 kD. This protein recruits the catalytic subunit from the cytosol to the plasma membrane through high-affinity interaction with G-beta-gamma proteins. Multiple alternatively spliced transcript variants encoding two distinct isoforms have been found. [provided by RefSeq, Oct 2011]

phosphoinositide-3-kinase, regulatory subunit 4

Predicted to enable protein serine/threonine kinase activity. Involved in several processes, including early endosome to late endosome transport; phosphatidylinositol 3-kinase/protein kinase B signal transduction; and phosphatidylinositol-3-phosphate biosynthetic process. Located in late endosome and microtubule cytoskeleton. Part of phosphatidylinositol 3-kinase complex, class III. [provided by Alliance of Genome Resources, Mar 2025]

phosphoinositide-3-kinase, regulatory subunit 3 (gamma)

Phosphatidylinositol 3-kinase (PI3K) phosphorylates phosphatidylinositol and similar compounds, which then serve as second messengers in growth signaling pathways. PI3K is composed of a catalytic and a regulatory subunit. The protein encoded by this gene represents a regulatory subunit of PI3K. The encoded protein contains two SH2 domains through which it binds activated protein tyrosine kinases to regulate their activity. [provided by RefSeq, Jun 2016]

phosphoinositide-3-kinase, regulatory subunit 2 (beta)

Phosphatidylinositol 3-kinase (PI3K) is a lipid kinase that phosphorylates phosphatidylinositol and similar compounds, creating second messengers important in growth signaling pathways. PI3K functions as a heterodimer of a regulatory and a catalytic subunit. The protein encoded by this gene is a regulatory component of PI3K. Three transcript variants, one protein coding and the other two non-protein coding, have been found for this gene. [provided by RefSeq, Apr 2019]

phosphoinositide-3-kinase, regulatory subunit 1 (alpha)

Phosphatidylinositol 3-kinase phosphorylates the inositol ring of phosphatidylinositol at the 3-prime position. The enzyme comprises a 110 kD catalytic subunit and a regulatory subunit of either 85, 55, or 50 kD. This gene encodes the 85 kD regulatory subunit. Phosphatidylinositol 3-kinase plays an important role in the metabolic actions of insulin, and a mutation in this gene has been associated with insulin resistance. Alternative splicing of this gene results in four transcript variants encoding different isoforms. [provided by RefSeq, Jun 2011]

pleckstrin homology domain containing, family A (phosphoinositide binding specific) member 1 pseudogene

phosphoinositide kinase, FYVE finger containing

Phosphorylated derivatives of phosphatidylinositol (PtdIns) regulate cytoskeletal functions, membrane trafficking, and receptor signaling by recruiting protein complexes to cell- and endosomal-membranes. Humans have multiple PtdIns proteins that differ by the degree and position of phosphorylation of the inositol ring. This gene encodes an enzyme (PIKfyve; also known as phosphatidylinositol-3-phosphate 5-kinase type III or PIPKIII) that phosphorylates the D-5 position in PtdIns and phosphatidylinositol-3-phosphate (PtdIns3P) to make PtdIns5P and PtdIns(3,5)biphosphate. The D-5 position also can be phosphorylated by type I PtdIns4P-5-kinases (PIP5Ks) that are encoded by distinct genes and preferentially phosphorylate D-4 phosphorylated PtdIns. In contrast, PIKfyve preferentially phosphorylates D-3 phosphorylated PtdIns. In addition to being a lipid kinase, PIKfyve also has protein kinase activity. PIKfyve regulates endomembrane homeostasis and plays a role in the biogenesis of endosome carrier vesicles from early endosomes. The protein plays a key role in cell entry of ebola virus and SARS-CoV-2 by endocytosis Mutations in this gene cause corneal fleck dystrophy (CFD); an autosomal dominant disorder characterized by numerous small white flecks present in all layers of the corneal stroma. Histologically, these flecks appear to be keratocytes distended with lipid and mucopolysaccharide filled intracytoplasmic vacuoles. [provided by RefSeq, Jul 2021]

neuronal tyrosine-phosphorylated phosphoinositide-3-kinase adaptor 1

Predicted to be involved in neuron projection morphogenesis and phosphatidylinositol 3-kinase/protein kinase B signal transduction. [provided by Alliance of Genome Resources, Mar 2025]

neuronal tyrosine-phosphorylated phosphoinositide-3-kinase adaptor 2

Predicted to be involved in neuron projection morphogenesis and phosphatidylinositol 3-kinase/protein kinase B signal transduction. [provided by Alliance of Genome Resources, Mar 2025]

FIG4 phosphoinositide 5-phosphatase

The protein encoded by this gene belongs to the SAC domain-containing protein gene family. The SAC domain, approximately 400 amino acids in length and consisting of seven conserved motifs, has been shown to possess phosphoinositide phosphatase activity. The yeast homolog, Sac1p, is involved in the regulation of various phosphoinositides, and affects diverse cellular functions such as actin cytoskeleton organization, Golgi function, and maintenance of vacuole morphology. Membrane-bound phosphoinositides function as signaling molecules and play a key role in vesicle trafficking in eukaryotic cells. Mutations in this gene have been associated with Charcot-Marie-Tooth disease, type 4J. [provided by RefSeq, Jul 2008]

transmembrane phosphoinositide 3-phosphatase and tensin homolog 2 pseudogene 5

pleckstrin homology domain containing, family A (phosphoinositide binding specific) member 4

This gene encodes a pleckstrin homology (PH) domain-containing protein. The PH domain is found near the N-terminus and contains a putative phosphatidylinositol 3, 4, 5-triphosphate-binding motif (PPBM). Elevated expression of this gene has been observed in some melanomas. Alternate splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, May 2017]

pleckstrin homology domain containing, family A (phosphoinositide binding specific) member 1

This gene encodes a pleckstrin homology domain-containing adapter protein. The encoded protein is localized to the plasma membrane where it specifically binds phosphatidylinositol 3,4-bisphosphate. This protein may be involved in the formation of signaling complexes in the plasma membrane. Polymorphisms in this gene are associated with age-related macular degeneration. Alternate splicing results in multiple transcript variants. A pseudogene of this gene is found on chromosome 5.[provided by RefSeq, Sep 2010]

phosphoinositide-3-kinase adaptor protein 1

Predicted to enable phosphatidylinositol 3-kinase regulatory subunit binding activity and signaling receptor binding activity. Predicted to be involved in positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction; regulation of inflammatory response; and regulation of innate immune response. Predicted to be located in membrane. Predicted to be active in cytosol. [provided by Alliance of Genome Resources, Mar 2025]

phospholipase C, beta 1 (phosphoinositide-specific)

The protein encoded by this gene catalyzes the formation of inositol 1,4,5-trisphosphate and diacylglycerol from phosphatidylinositol 4,5-bisphosphate. This reaction uses calcium as a cofactor and plays an important role in the intracellular transduction of many extracellular signals. This gene is activated by two G-protein alpha subunits, alpha-q and alpha-11. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

3-phosphoinositide dependent protein kinase 1

Enables 3-phosphoinositide-dependent protein kinase activity; phospholipase activator activity; and phospholipase binding activity. Involved in several processes, including cell surface receptor signaling pathway; regulation of protein kinase activity; and regulation of signal transduction. Acts upstream of or within intracellular signal transduction. Located in cell projection; cytosol; and plasma membrane. Implicated in prostate cancer. Biomarker of lung non-small cell carcinoma. [provided by Alliance of Genome Resources, Mar 2025]

transmembrane phosphoinositide 3-phosphatase and tensin homolog 2 pseudogene 2

transmembrane phosphoinositide 3-phosphatase and tensin homolog 2 pseudogene 3

transmembrane phosphoinositide 3-phosphatase and tensin homolog 2 pseudogene 1

transmembrane phosphoinositide 3-phosphatase and tensin homolog 2 pseudogene 6

transmembrane phosphoinositide 3-phosphatase and tensin homolog 2 pseudogene 4

pleckstrin homology domain containing, family A (phosphoinositide binding specific) member 2

Enables fibronectin binding activity; laminin binding activity; and phosphatidylinositol-3,4-bisphosphate binding activity. Involved in positive regulation of cell-matrix adhesion. Located in cytoplasm and membrane. Part of protein-containing complex. [provided by Alliance of Genome Resources, Mar 2025]

pleckstrin homology domain containing, family A (phosphoinositide binding specific) member 3

Enables identical protein binding activity and phosphatidylinositol-4-phosphate binding activity. Predicted to be involved in endosome organization; receptor recycling; and retrograde transport, endosome to Golgi. Located in Golgi apparatus. [provided by Alliance of Genome Resources, Mar 2025]

pleckstrin homology domain containing, family A (phosphoinositide binding specific) member 8

Enables several functions, including ceramide binding activity; glycolipid transfer activity; and phosphatidylinositol-4-phosphate binding activity. Involved in ER to Golgi ceramide transport. Located in nucleoplasm and trans-Golgi network. [provided by Alliance of Genome Resources, Mar 2025]