E. coli-derived human IGFBP-rp1/IGFBP-7 protein Ser27-Leu282
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
<0.10 EU per 1 μg of the protein by the LAL method.
N-terminal sequence Analysis
Predicted Molecular Mass
29-34 kDa, under reducing conditions
Measured by its binding ability in a functional ELISA. When Recombinant Human IGFBP-rp1/IGFBP-7 is used at 500 ng/mL (100 μL/well), the concentration of Recombinant Human CCL21/6Ckine (Catalog # 366-6C) that produces 50% optimal binding response is 2-12 ng/mL.
Recombinant Human IGFBP-rp1/IGFBP-7 Protein, CF Scientific Data Examples
Recombinant Human IGFBP-rp1/IGFBP-7 Protein Binding Activity
When Recombinant Human IGFBP-rp1/IGFBP-7 (Catalog # 10163-B7) is used at 500 ng/mL, 100 µL/well, Recombinant Human CCL21/6Ckine (Catalog # 366-6C) binds with an ED50 of 2-12 ng/mL.
Recombinant Human IGFBP-rp1/IGFBP-7 Protein SDS-PAGE
2 µg/lane of Recombinant Human IGFNP-rp1/IGFBP-7 (Catalog # 10163-B7) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing major bands at 29-34 kDa and 25-30 kDa, respectively.
Formulation, Preparation and Storage
What does CF mean?
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our
Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant
protein to be stored at a more dilute concentration.
The carrier free version does not contain BSA.
What formulation is right for me?
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or
as an ELISA standard.
In contrast, the carrier free protein is recommended for applications, in which the presence of BSA
Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitute at 500 μg/mL in PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, -20 to -70 °C under sterile conditions after reconstitution.
IGFBP-rp1, also known as IGFBP-7, Mac25/Angiomodulin (AGM), tumor-derived adhesion factor (TAF) and prostacyclin-stimulating factor (PSF), is a secreted protein that contains three protein domain modules. Human IGFBP-rp1 cDNA encodes 282 amino acid (aa) residue precursor protein with a putative 26 aa signal peptide. Mature IGFBP-rp1 is a glycosylated protein with an N-terminal IGFBP domain, followed by a Kazal-type serine proteinase inhibitor domain and a C-terminal immunoglobulin-like C2-type domain. The similarity of IGFBP-rp1 with the IGFBPs is confined to the N-terminal IGFBP domain, which contains all 12 of the conserved cysteine residues found in IGFBP1 through 5. Human and mouse IGFBP-rP1 are highly homologous. Human and mouse IGFBP-rp1 share 94% aa sequence identity. IGFBP‑rp1 is expressed in many normal tissues and in cancer cells. It is abundantly expressed in high endothelial venules (HEVs) of blood vessels in the secondary lymphoid tissues. The expression of IGFBP-rp1 is up-regulated in senescing epithelial cells and by retinoic acid. IGFBP-rp1 binds IGF and insulin with very low affinity and has been shown to enhance the mitogenic actions of IGF and insulin. IGFBP-rp1 also has IGF/insulin-independent activities. It interacts with heparan sulfate proteoglycans, type IV collagen, and specific chemokines. IGFBP-rp1 supports weak cell adhesion, promotes cell spreading on type IV collagen, and stimulates the production of the potent vasodilator PGI2. It modulates tumor cell growth and has also been implicated in angiogenesis. IGFBP-rp1 is proteolytically cleaved between lysine 97 and alanine 98. Cleaved IGFBP-rp1 has enhanced cell attachment activity but can no longer bind IGF/insulin (1-3).
Hwa, V. et al. (1999) Endocrinology Rev. 20:761.
Nagakubo, D. et al. (2003) J. Immunol. 171:553.
Ahmed, S. et al. (2003) Biochem. Biophys. Res. Commun. 310:612.
Insulin-like Growth Factor Binding Protein Related Protein 1
Which Brands are Currently Available on bio‑techne.com? R&D Systems, Tocris Bioscience and ProteinSimple branded products are available to purchase through bio‑techne.com. ProteinSimple branded instruments are available to quote. ACD branded products will be available on bio‑techne.com in the near future. Novus Biologicals branded products are not currently available on bio‑techne.com and can be found at novusbio.com.
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