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. PIK3R1 encodes the 85 kD regulatory subunit. Phosphatidylinositol 3-kinase plays an important role in the metabolic actions of insulin, and a mutation in PIK3R1 has been associated with insulin resistance. Alternative splicing of PIK3R1 results in four transcript variants encoding different isoforms.蛋白別名為：PIK3R1; GRB1; Phosphatidylinositol 3-kinase regulatory subunit alpha; PI3-kinase regulatory subunit alpha; PI3K regulatory subunit alpha; PtdIns-3-kinase regulatory subunit alpha; Phosphatidylinositol 3-kinase 85 kDa regulatory subunit alph;基因ID為：5295；蛋白質ID:P27986
應用類型
WB，IHC-p，ELISA補充：最優的抗體稀釋比例需要基于客戶實驗進行優化.建議的起始稀釋比例如下: WB: 1:500-1:2000, IHC-p: 1:100-1:300, ELISA: 1:10000. Not yet tested in other applications.
免疫原
合成多肽：human PI 3-kinase p85α around the phosphorylation site of Y607.
