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Technical Data Sheet

CM4371

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Calnexin (N-terminal region)
Mouse Monoclonal IgG1
Price
Size
Species Reactivity
MW

$245
100 μl
Hu, Rt, Ms
180 kDa

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Immunocytochemical labeling in paraformaldehyde fixed and NP-40 permeabilized rat A7r5 cells. The cells were labeled with mouse monoclonal Anti-Calnexin (CM4371), then the antibody was detected using Goat anti-Mouse secondary antibody conjugated to DyLight® 594.

Application
Dilution


ELISA
1:2000


ICC
1:50


WB
1:1000



End user should determine optimal dilution for their particular applications and experiments.Western blot membranes were incubated with diluted antibody in 5% non-fat milk, PBS, 0.04% Tween20 for 1hour at room temperature.
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Background
Calnexin is a 90 kDa integral membrane protein located primarily in the endoplasmic reticulum (ER). The structure of calnexin includes a long N-terminal calcium-binding domain that extends into the lumen of the ER and a short, acidic cytosolic domain. Calnexin associates with several cell surface proteins as they pass through the ER, and may be involved in the Ca2+-dependent retention of proteins in the ER. The amino acid sequence of calnexin is highly conserved among various species and is similar in sequence to calreticulin, another Ca2+-binding protein found in the ER. Phosphorylation may regulate the activity of the C-terminal region of Calnexin. Both proline-dependent kinase and casein kinase sites have been identified, and the phosphorylation of these sites may regulate calnexin functions involved with detection of ER protein quality control and transport.


Background References
Wada, I. et al. (1991) J Biol Chem. 266(29):19599.
Bergeron, J.J. et al. (1994) Trends Biochem Sci. 19(3):124.
Chevet, E. et al. (2010) Semin Cell Dev Biol. 21(5):486.
Immunogen
Clone M437 was generated from a recombinant protein corresponding to amino acid residues in the N-terminal region of human calnexin. This sequence has high homology to similar regions in rat and mouse Calnexin.
Buffer and Storage
Mouse monoclonal purified with protein A chromatography is supplied in 100µl phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide. Store at –20°C. Stable for 1 year.
Specificity
This antibody detects a 90 kDa* protein corresponding to the apparent molecular mass of Calnexin on SDS-PAGE immunoblots of human HeLa and rat A7r5 cells. In immunocytochemistry, anti-Calnexin specifically stains endoplasmic reticulum and related vesicular structures in paraformaldehyde fixed and NP-40 permeabilized cells.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.
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