IGF-BP1
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) .
Product Specifications
Synonyms
IGFBP1; AFBP; IBP1; PP12; IGF-BP25; hIGFBP-1
NCBI Gene ID
3484
UniProt
P08833
Accession Number
NP_000587.1
Accession Number mRNA
NM_000596.2
Chromosomal Location
7p13-p12
Reactivity
Human
Cross Reactivity
Human
Sequence
Endotoxin
< 0.1 ng/µg of protein (< 1EU/µg)
Purity
> 98% by SDS-PAGE & HPLC analyses
Bioactivity
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.
Length
235
Form
Lyophilized
Molecular Weight
25.4 kDa
Host or Source
E. coli
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