ANTI-CONNEXIN 43 CLONE P2C4

General description

Gap junction alpha-1 protein (UniProt: P08050; also known as Connexin-43, CX43, Gap junction 43 kDa heart protein) is encoded by the Gja1 (also known as Cxn-43) gene (Gene ID: 24392) in rat. The gap junction channels are dodecamers of transmembrane proteins of the connexin family. Connexins usually have a short half-life ( 1.5 5 h) and this short half-life is a key element of coupling regulation as it allows very dynamic and acute changes in gap junction regulation and gap junctional communication. In cardiomyocytes three types of connexins have been identified: Connexin 40, 43, and 45. Each of these connexins form channels with unique and specific electrophysiological properties. Connexin-43 is a multi-pass membrane protein and is the most ubiquitous connexin with widespread tissue expression pattern. Connexin-43 can be phosphorylated at multiple sites and phosphorylation is shown to regulate the kinetics of its trafficking, assembly, gating and turnover in a cell-cycle-stage specific manner. Phosphorylation at Ser325, Ser328 and Ser330 by casein kinase I is reported to modulate gap junction assembly while phosphorylation of Ser368 by protein kinase C gamma isoform leads to disassembly of gap junction plaques and inhibition of gap junction activity. During myocardial ischemia connexin-43 is shown to become dephosphorylated that allows gap junctions to be opened and convey the propagation of ischemia injury. In bladder smooth muscle cells, connexin-43 displays a circadian cycle with low levels during the sleep phase.

Specificity

Clone P2C4 detects Connexin 43 in human heart. It targets an epitope within 23 amino acids from the C-terminal region. It primarily binds to the non-phosphorylated isoform around Ser364/365.

Immunogen

KLH-conjugated linear peptide corresponding to 23 amino acids from the C-terminal region of rat connexin 43.

Application

Anti-Connexin 43 Antibody, clone P2C4, Cat. No. MABT902, is a mouse monoclonal antibody that targets Connexin-43 and is tested for use in Electron Microscopy, Immunocytochemistry, Immunohistochemistry (Paraffin), Immunoprecipitation, and Western Blotting.

Immunohistochemistry Analysis: A 1:1,000 dilution from a representative lot detected Connexin 43 in rat heart tissue.

Immunoprecipitation Analysis: A representative lot detected Connexin 43 in Immunoprecipitation applications (Solan, J.L., et. al. (2003). J Cell Sci. 116(Pt 11):2203-11).

Electron Microscopy Analysis: A representative lot detected Connexin 43 in Electron Microscopy applications (Sosinsky, G.E., et. al. (2007). Biochem J. 408(3):375-85).

Immunocytochemistry Analysis: A representative lot detected Connexin 43 in Immunocytochemistry applications (Sosinsky, G.E., et. al. (2007). Biochem J. 408(3):375-85).

Western Blotting Analysis: A representative lot detected Connexin 43 in Western Blotting applications (Sosinsky, G.E., et. al. (2007). Biochem J. 408(3):375-85).

Quality

Evaluated by Immunohistochemistry in human heart tissue.

Immunohistochemistry Analysis: A 1:1,000 dilution of this antibody detected Connexin 43 in human heart tissue.

Target description

43.03 kDa calculated.

Physical form

Format: Purified

Other Notes

Concentration: Please refer to lot specific datasheet.