Insulin-like Growth Factor-Binding Protein 1, IBP-1, Placenta Protein 12 (PP12)
Description :
IGF-BPs controls the distribution, function and activity of IGFs in various cell tissues and body fluids. Currently there are seven named IGF-BPs that form high affinity complexes with both IGF-I and IGF-II. IGF-BP1 is a 25.4 kDa cysteine-rich secreted protein expressed in liver, deciduas, and kidneys and is the most abundant IGF-BP in amniotic fluid. Levels of IGF-BP1 in serum are lowest after food. IGF-BP1 binds to both IGF-I and IGF-II with equal affinity. Phosphorylated IGF-BP1 hinders IGF actions, where as nonphosphorylated IGF-BP1 is stimulatory. Recombinant human IGF-BP1 is a 25.4 kDa protein consisting of 235 amino acid residues (Isoform A).
Catalog #:
350-10
Source :
E.coli
Purity :
Greater than 98% by SDS-PAGE gel and HPLC analyses
Endotoxin Level :
Endotoxin level is less than 0.1 ng per μg (1EU/μg).
Biological Activity :
The ED50 was determined by its ability to inhibit IGF-I induced proliferation of MCF-7 is ≤ 0.5 μg/ml in the presence of 6 ng/ml of human IGF-I.