产品说明

一般描述

Recombinant, human C-reactive protein expressed in E. coli. CRP is a major acute-phase plasma protein that is dramatically elevated in patients with acute-phase conditions. Composed of five identical noncovalently linked subunits. Exhibits Ca²⁺-dependent binding to a variety of substrates. Important in diagnosis of rheumatoid arthritis. Suitable for immunological studies. In purified states and in plasma the monomeric form (M.W. ~21 kDa) aggregates as a cyclic pentamer.
Recombinant, human C-reactive protein expressed in E. coli. CRP is a major acute-phase plasma protein that is dramatically elevated in patients with acute-phase conditions. Composed of five identical noncovalently linked subunits. Exhibits Ca²⁺-dependent binding to a variety of substrates. Important in diagnosis of rheumatoid arthritis. Suitable for immunological studies. In purified states and in plasma the monomeric form (M.W. ~21 kDa) aggregates as a cyclic pentamer. Intended for use as a calibration standard for assays of CRP, for structural and functional studies, and as an antigen for production of antisera.Calibrated by electroimmunoassay against WHO reference standard or equivalent.
M.W. 23,000 (monomer); 115,000 (pentamer).

警告

Toxicity: Standard Handling (A)

外形

In 140 mM NaCl, 20 mM Tris-HCl, 2 mM CaCl₂, 0.05% NaN₃, pH 7.5.

其他说明

Paffen, E., et al. 2004. Arterioscler. Thromb. Vasc. Biol.24, 975.
Ballou, S.P., and Kushner, I. 1992. Adv. Intern. Med. 37, 313.
Stults, N.L., et al. 1987. Anal. Biochem. 161, 567.
Woo, P., et al. 1985. J. Biol. Chem. 260, 13384.
de Beer, F.C., and Pepys, M.B. 1982. J. Immun. Methods 50, 17.

法律信息

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

基本信息

产品性质

安全信息

产品说明

一般描述

C Reactive Protein (CRP) is a homopentameric protein, which belongs to the pentraxin family. It is produced in liver hepatocytes, smooth muscle cells, macrophages and adipocytes. CRP gene is located on human chromosome 1q23.2.

应用

C Reactive Protein from human fluids has been used:

• to investigate the neutrophil extracellular traps (NETs)-dependent generation of monomeric CRP (mCRP) from pentameric CRP (pCRP)
• to evaluate its effects on areas at risk (AAR) of myocardium with ischemia-reperfusion injury
• to measure intracellular levels of reactive oxygen species (ROS)

生化/生理作用

C Reactive Protein (CRP) plays a critical role in apoptosis, phagocytosis, nitric oxide (NO) release and the secretion of cytokines, such as interleukin-6 and tumor necrosis factor-α. CRP acts as a marker for cardiovascular diseases, rheumatoid arthritis and cancer.
C reactive protein (CRP) is an acute phase protein. Serum levels in patients with atherosclerosis is predictive of increased risk of myocardial infarction (MI) and stroke. The cytokine IL-6 is thought to be the key mediator in hepatocyte secretion of acute phase proteins including CRP. CRP mediates innate immunity by binding to microbial polysaccharides and to ligands exposed on damaged cells. The binding activates the classical complement pathway (C1, C4, C2, C3 but not C5-9). Opsonization of the substrates leads to their uptake by phagocytic cells and limits the inflammatory response.

包装

Package size based on protein content.

其他说明

CRP is isolated from human fluids (Ascitic/Pleural).

外形

Solution in 0.02 M Tris, 0.28 M sodium chloride, 0.005 M calcium chloride, pH 7.8 - 8.2, containing 0.1% sodium azide.

分析说明

Protein determined by Lowry.

基本信息

产品性质

安全信息