Recombinant Mouse IGFBP-1 Protein, CF

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Product Details

Summary
Reactivity MuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

Order Details

Recombinant Mouse IGFBP-1 Protein, CF Summary

Details of Functionality
Measured by its ability to inhibit the biological activity of IGF-I or IGF-II on MCF‑7 human breast cancer cells. Karey, K.P. et al. (1988) Cancer Research 48:4083. The ED50 for this effect is typically 0.25-1.5 µg/mL in the presence of 2.5 ng/mL Recombinant Mouse IGF-I.
Source
Mouse myeloma cell line, NS0-derived mouse IGFBP-1 protein
Ala26-Asn272
Accession #
N-terminal Sequence
Ala26
Protein/Peptide Type
Recombinant Proteins
Gene
Igfbp1
Purity
>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
27 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
34 kDa, reducing conditions
Publications
Read Publications using
1588-B1 in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after opening.
Buffer
Supplied as a 0.2 μm filtered solution in Acetonitrile and TFA.
Purity
>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Mouse IGFBP-1 Protein, CF

  • alpha-pregnancy-associated endometrial globulin
  • amniotic fluid binding protein
  • binding protein-25
  • binding protein-26
  • binding protein-28
  • growth hormone independent-binding protein
  • hIGFBP-1
  • IBP1
  • IBP-1
  • IGF-binding protein 1
  • IGFBP1
  • IGFBP-1
  • IGF-BP25
  • insulin-like growth factor binding protein 1
  • insulin-like growth factor-binding protein 1
  • Placental protein 12
  • PP12AFBP

Background

The insulin-like growth factor binding protein (IGFBP) family consists of six structurally related proteins that bind IGF with high affinity (1, 2). These proteins share conserved cysteine-rich N- and C- terminal regions that participate in IGF binding. IGFBPs regulate the bioavailability of IGFs and modulate their biological activities, both positively and negatively. Some IGFBPs also have intrinsic bioactivity that is IGF-independent. Post-transitional modifications of the IGFBPs, including glycosylation, phosphorylation and proteolysis, influence IGF binding affinities and tissue localization, affecting both the IGF-dependent and independent functions (1, 2).

Mouse IGFBP-1 cDNA encodes a 272 amino acid (aa) residue precursor protein with a putative 25 aa signal peptide (3). Mature mouse IGFBP-1 contains potential phosphorylation and proteolytic cleavage sites, an Arg-Gly-Asp (RGD) integrin receptor recognition sequence, but lacks potential N-linked glycosylation sites.
IGFBP-1 binds equally well to IGF-I and IGF-II. Phosphorylation of human IGFBP-1, but not rat IGFBP-1, increases IGF affinity. Mouse IGFBP-1 shares 67% and 93% aa sequence identity with human and rat IGFBP-1, respectively. IGFBP-1 is expressed in liver, decidua, and kidneys and is the most abundant IGFBP in amniotic fluid. Hepatic production of IGFBP-1 is down-regulated by insulin and up-regulated by glucocorticoids. Circulating IGFBP-1 levels are elevated under various catabolic conditions including bacterial or viral infections, trauma and diabetes (4). IGFBP-1 has been shown to either potentiate or inhibit the activities of IGF in a variety of cells. IGFBP-1, through its RDG motif, also interacts with alpha 5 beta 1 intergrin to stimulate changes in cell adhesion and migration in the absence of IGFs (1, 2).

  1. Firth, S.M. and R.C. Baxter (2002) Endocrine Reviews 23:824.
  2. Rajaram, S. et al. (1997) Endocrine Reviews 18:801.
  3. Schuller, A.G. et al. (1994) Mol. Cell. Endocrinol. 104:57.
  4. Lang, C.H. et al. (2003) Endocrinology 144:3922.

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Publications for IGFBP-1 (1588-B1)(3)

We have publications tested in 2 confirmed species: Mouse, N/A.

We have publications tested in 2 applications: Bioassay, ELISA Standard.


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(1)
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(2)
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Bioinformatics

Gene Symbol Igfbp1
Entrez
Uniprot