Recombinant Human PIK3CA/PIK3R1, FLAG-tagged

Cat.No. : PIK3CA/PIK3R1-631H
Product Overview : Recombinant human p110α and p85α (no tag) complex of N-terminal FLAG-tagged were coexpressed in aBaculovirus infected Sf9 cellexpression system. p110α MW=129 kDa, p85α MW=88 kDa.
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Cat. No. : PIK3CA/PIK3R1-631H
Description : The PI3K comprises of a 110 kDa catalytic subunit and a 85 kDa regulatory subunit. A number of isoforms of the 110 kDa catalytic subunit and the 85 kDa regulatory subunit exist in cells. The p110α catalytic subunit (PIK3CA) is frequently mutated or amplified in a variety of cancers including ovarian and colon and this protein is one of the PI3K mutants. PIK3CA gene copy number is increased in over 30% of ovarian cancers and this leads to increased PI3-kinase activity. Furthermore, the activity of p110α is essential for vascular development and inactivation of p110α leads to severe defects in angiogenic sprouting and vascular remodeling.
Source : Sf9 cells.
Formulated In : 25 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.05% Tween-20, 30% glycerol, and 3 mM DTT.
Specific Activity : 130 pmol/min/μg. A unit of 110a/p85a kinase activity is defined as the amount of enzyme required to produce 1 pmol of Phosphoinositol-3, 4,5-Trisphosphate/min at 37°C. A 25 μl kinase reaction is conducted in a buffer containing 10 mM Tris-HCl (pH 7.5), 50 mM NaCl, 5 mM MgCl2, 100 μM ATP, 10 μg mix of PS and Phosphoinositol-4,5-Bisphosphate, and 50 ng enzyme for 15 minutes at 30°C. Conversion of ATP to ADP is detected using PI3K ADP-Glo® Luminescent Kinase Assay (Promega Corporation, Madison, WI).
Application : Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.
Stability : >6 months at –80°C.
Pathways : Calcium signaling pathway; Insulin signaling pathway; Metabolism of carbohydrates; Chronic myeloid leukemia; Pancreatic cancer; Pathways in cancer; Small cell lung cancer; T cell receptor signaling pathway; Acute myeloid leukemia; Colorectal cancer; Endometrial cancer; Fc gamma R-mediated phagocytosis; Fc epsilon RI signaling pathway; Acute myeloid leukemia; Jak-STAT signaling pathway; Leukocyte transendothelial migration; Melanoma; Natural killer cell mediated cytotoxicity; Neurotrophin signaling pathway; Non-small cell lung cancer; Pancreatic cancer; Pathways in cancer; Phosphatidylinositol signaling; Progesterone-mediated oocyte maturation; Prostate cancer; Regulation of actin cytoskeleton; Renal cell carcinoma; Small cell lung cancer; T cell receptor signaling pathway; Toll-like receptor signaling pathway; Type II diabetes mellitus; VEGF signaling pathway; mTOR signaling pathway
Gene Name : PIK3CA phosphoinositide-3-kinase, catalytic, alpha polypeptide [ Homo sapiens ],PIK3R1 phosphoinositide-3-kinase, regulatory subunit 1 (alpha) [ Homo sapiens ]
Synonyms : PIK3CA; phosphoinositide-3-kinase, catalytic, alpha polypeptide; PI3K; MGC142161; MGC142163; p110-alpha; Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha isoform; EC 2.7.1.153; PI3-kinase p110 subunit alpha; PtdIns-3-kinase p110; PI3Kbeta; PIK3R1; phosphoinositide-3-kinase, regulatory subunit 1 (alpha); p85; GRB1; p85-ALPHA
Gene ID : 5290,5295
mRNA Refseq : NM_006218,NM_181504
Protein Refseq : NP_006209,NP_852556
MIM : 171834,171833
UniProt ID : P42336, P27986
Chromosome Location : 3q26.3, 5q13.1
Function : ATP binding; nucleotide binding; transferase activity; 1-phosphatidylinositol-3-kinase activity; inositol or phosphatidylinositol kinase activity; insulin receptor substrate binding; phosphatidylinositol-4,5-bisphosphate 3-kinase activity; phosphotransferase activity, alcohol group as acceptor; ErbB-3 class receptor binding

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