#P06213
3643
Product Information
Storage
Store at –80°C.
Keep enzymes on ice during use.
Avoid repeated freeze-thaw cycles.
Source / Purification
The GST-Kinase fusion protein was produced using a baculovirus expression system with a construct expressing a fragment of human INSR (Gly989-Ser1382) with an amino-terminal GST tag. The protein was purified by one-step affinity chromatography using glutathione-agarose.
Product Description
| Molecular Formula | Peptide substrate, Biotin- IRS1 (Tyr891) peptide: 2,005 Daltons. GST-INSR Kinase: 70 kDa. |
Background
Insulin receptor (INSR) is a membrane receptor tyrosine kinase. The receptor molecule consists of a disulfide linked heterodimer. The α subunit is a 135 kDa extracellular fragment, and the β subunit is a 95 kDa fragment containing an extracellular domain, a single transmembrane domain, and an intracellular tyrosine kinase domain (1). Insulin ligand binding to this receptor results in receptor autophosphorylation and tyrosine kinase activation. INSR catalyzes the tyrosine phosphorylation of molecules such as IRS, Gab1, Shc, and Cbl, which further activate the downstream MAPK, PI3K, and TC10 pathways. This eventually leads to increases in glucose uptake and metabolism as well as cell growth (2,3). INSR has peptide substrate specificity similar to other receptor tyrosine kinase members, preferring acidic residues at the -1 to -4 positions and large hydrophobic amino acids at positions +1 and +3 (4).
Species Reactivity
Species reactivity is determined by testing in at least one approved application (e.g., western blot).
Cross-Reactivity Key
H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected
Trademarks and Patents
Limited Uses
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