Human HPRG Antibody Summary
Val19-Lys525
Accession # P04196
Applications
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Reconstitution Calculator
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: HPRG
Human histidine-rich glycoprotein (HPRG) is a multidomain, monomeric, secreted, 67 - 75 kDa member of the cystatin superfamily of molecules (1, 2). Its name derives from the fact that 26% of its amino acids (aa) are histidine and proline. In human, it is synthesized as a 525 aa precursor that contains an 18 aa signal sequence and a 507 aa mature region (3). Five distinct domains are recognized in the mature molecule. There are two N-terminal cystatin-like modules (aa 19 - 254) and one His-Pro-rich region (aa 350 - 497) that is flanked by two Pro-rich segments (aa 276 - 321 and 498 - 525) (3, 4). The His-Pro-rich region contains 10 tandem repeats with an HHPHG motif, and the N- and C-termini are linked by a disulfide bond (3, 5, 6). Human HPRG is only 60% aa identical to mouse HPRG. There are multiple ligands for HPRG. These include small molecular weight molecules (metal ions; heme), hemostatic molecules (heparan sulfate; TSP; plasminogen), and immune system components (T cells; macrophages) (1, 5). About 50% of plasma plasminogen circulates bound to HPRG. Upon immobilization to cell surface tropomyosin in a Zn++-dependent manner, it is converted to plasmin by tPA (7 - 9). HPRG also shows antiangiogenic activity on endothelial cells (10).
- Jones, A.L. et al. (2005) Immunol. Cell Biol. 83:106.
- Koide, T. and S. Odani (1987) FEBS Lett. 216:17.
- Koide, T. et al. (1986) Biochemistry 25:2220.
- SwissProt Accession # P04196.
- Borza, D-B. et al. (1996) Biochemistry 35:1925.
- Sorensen, C.B. et al. (1993) FEBS Lett. 328:285.
- Donate, F. et al. (2004) Cancer Res. 64:5812.
- Borza, D-B. and W.T. Morgan (1997) J. Biol. Chem. 272:5718.
- Guan, X. et al. (2004) Thromb. Haemost. 92:403.
- Juarez, J.C. et al. (2002) Cancer Res. 62:5344.
Product Datasheets
Citation for Human HPRG Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
1 Citation: Showing 1 - 1
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Histidine-rich glycoprotein modulates the anti-angiogenic effects of vasculostatin.
Authors: Klenotic PA, Huang P, Palomo J, Kaur B, Van Meir EG, Vogelbaum MA, Febbraio M, Gladson CL, Silverstein RL
Am. J. Pathol., 2010-02-18;176(4):2039-50.
Species: Human
Sample Types: Whole Tissue
Applications: IHC-P
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