Description
Product Usage Information
Western Blotting: 1:1000
Immunohistochemistry (Paraffin): 1:200 - 1:800
Immunofluorescence (Immunocytochemistry): 1:100 - 1:400
Storage
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at -20°C. Do not aliquot the antibody.
Protocol
Available protocols: Western Blotting, Immunohistochemistry (Paraffin), Immunofluorescence (Immunocytochemistry)
Specificity / Sensitivity
CRP2 (E8R5N) Rabbit Monoclonal Antibody recognizes endogenous levels of total CRP2 protein.
Species Reactivity: Human, Mouse, Rat
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Leu88 of human CRP2 protein.
Background
CRP2 is a LIM domain containing protein that is expressed from the gene. It was first described to be a differentially regulated and preferentially expressed protein in aortic smooth muscle cells (1). It plays a role in development of the vasculature in embryogenesis (2). It was also established that CRP2 is expressed exclusively in stellate cells in the liver, being absent from hepatocytes, sinusoidal endothelial cells, and Kupffer cells. Upregulation of CRP2 was observed to occur upon early activation in the myofibroblastic program of stellate cells, and is now thought to be involved in the development of liver fibrosis (3). More recently, CRP2 has been shown to be an invadopodia actin bundling protein. Invadopodia are actin-rich membrane protrusions that direct extracellular matrix degradation that are believed to facilitate tumor cell invasion. CRP2 has been shown to be upregulated in breast tumors (4), and in B-cell acute lymphoblastic leukemia high CRP2 expression has been associated with poor outcome (5). The proximal promoter of the gene has been shown to possess two hypoxia responsive elements that are targeted by HIF-1α. A model now is proposed whereby the gene is a direct target of HIF-1 which facilitates hypoxia-induced breast cancer cell invasion through increased invadopodia formation (6).
Alternate Names
CRP2; CSRP2; cysteine and glycine rich protein 2; Cysteine and glycine-rich protein 2; Cysteine-rich protein 2; epididymis secretory sperm binding protein; IL-10E1; IL10E1; LIM domain only 5, smooth muscle; LIM domain only protein 5; LMO-5; LMO5; SmLIM; Smooth muscle cell LIM protein
