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Overview
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MW : 90.8kD. Recombinant Human PI4KB is produced by our Mammalian expression system and the target gene encoding Met1-Met801 is expressed with a 6His tag at the C-terminus. Phosphatidylinositol 4-Kinase beta (PI4KB) belongs to the PI3/PI4-kinase family and Type III PI4K subfamily. PI4KB contains one PI3K/PI4K domain and one PIK helical domain. It is highly expressed in heart, skeletal muscle, pancreas, testis and ovary; it is lowly expressed in liver tissue. PI4KB kinase activity can be inhibited by wortmannin, and increased by interacting with NCS1/FREQ. PI4KB phosphorylates phosphatidylinositol (PI) in the first committed step in the production of the second messenger inositol-1,4,5,-trisphosphate (PIP). In addition, PI4KB may regulate Golgi disintegration/reorganization during mitosis.
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Overview