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PX Domain
The PX domain is a phosphoinositide-binding structural domain involved in targeting of proteins to cell membranes. This domain was first found in P40phox and p47phox domains of NADPH oxidase (phox stands for phagocytic oxidase). It was also identified in many other proteins involved in membrane trafficking, including nexins, Phospholipase D, and phosphoinositide-3- kinases. The PX domain is structurally conserved in eukaryotes, although amino acid sequences show little similarity. PX domains interact primarily with PtdIns(3)P lipids. However some of them bind to phosphatidic acid, PtdIns(3,4)P2, PtdIns(3,5)P2, PtdIns(4,5)P2, and PtdIns(3,4,5)P3. The PX-domain can also interact with other domains and proteins. Human proteins containing this domain Sorting nexins contain this domain. Other examples include: * HS1BP3 * KIF16B (SNX23) * NCF1; NCF1C; NCF4; NISCH * PIK3C2A; PIK3C2B; PIK3C2G; PLD1; PLD2; PXK * RPS6KC1 * SGK3; SH3PXD2A; SNAG1; SNX9 Sorting nexin-9 is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phosphatidylinositol
Phosphatidylinositol (or Inositol Phospholipid) consists of a family of lipids as illustrated on the right, where red is x, blue is y, and black is z, in the context of independent variation, a class of the phosphatidylglycerides. In such molecules the isomer of the inositol group is assumed to be the myo- conformer unless otherwise stated. Typically phosphatidylinositols form a minor component on the cytosolic side of eukaryotic cell membranes. The phosphate group gives the molecules a negative charge at physiological pH. The form of phosphatidylinositol comprising the isomer ''muco''-inositol acts as a sensory receptor in the taste function of the sensory system. In this context it is often referred to as PtdIns, but that does not imply any molecular difference from phosphatidylinositols comprising the myo- conformers of inositol. The phosphatidylinositol can be phosphorylated to form phosphatidylinositol phosphate (PI-4-P, referred to as PIP in close context or inform ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NCF1C
Putative neutrophil cytosol factor 1C is a protein that in humans is encoded by the ''NCF1C'' gene. It relates to a type of white blood cell called a neutrophil. The Neutrophil Cytosolic Factor 1C (NCF1C) gene is responsible for encoding the 47 kDA cytosolic subunit of NADPH oxidase. The NCF1C gene is located near two pseudogenes and when the NCF1C gene recombines with them, the NCF1C gene will inactivate and can lead to chronic granulomatous disease Chronic granulomatous disease (CGD), also known as Bridges–Good syndrome, chronic granulomatous disorder, and Quie syndrome, is a diverse group of hereditary diseases in which certain cells of the immune system have difficulty forming the reacti .... References Further reading * * Human proteins {{protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SNX9
Sorting nexin-9 is a protein that in humans is encoded by the ''SNX9'' gene. This gene encodes a member of the sorting nexin family. Members of this family contain a phox (PX) domain, which is a phosphoinositide binding domain, and are involved in intracellular trafficking. This protein does not contain a coiled coil region, like some family members, but does contain an SH3 domain near its N-terminus. This protein interacts with the cytoplasmic domains of the precursor but not the processed forms of a disintegrin and metalloprotease domain 9 and 15. This protein binds the beta-appendage domain of adaptor protein 2 and may function to assist adaptor protein 2 in its role at the plasma membrane. This protein interacts with activated Cdc42-associated kinase-2 to regulate the degradation of epidermal growth factor receptor protein. Interactions SNX9 has been shown to interact with ADAM9, DNM2 and ADAM15 Disintegrin and metalloproteinase domain-containing protein 15 is an enzyme that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |