Connexin 43, phosphorylated (Ser368) (Connexin-43, Cx43, Cxn-43, Gap Junction 43 kD Heart Protein, Gap Junction alpha-1 Protein, Gap Junction Protein alpha 1, Gja1, MGC93610)

Gap junctional intercellular communication is thought to play a key role in development and may also be involved in epilepsy (Aronica et al., 2001). Connexin43 forms gap-junctional channels and regulates the permeability of these gap junctions to small organic molecules. Permeability of Connexin43 is known to be regulated by phosphorylation at Ser368 by protein kinase C (Yogo et al., 2002; Bao et al., 2004a). Phosphorylation of Ser368 by PKC induces a conformational change of Connexin43 that results in a decrease in gap junction permeability (Bao et al., 2004b).\n\nApplications:\nSuitable for use in Western Blot. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 1:1000\nOptimal dilutions to be determined by the researcher.\n\nPositive Control:\nRat hippocampal lysate\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

C7857-03Q

Size

100ul

Applications

WB

Hosts

Rabbit

Reactivities

Rat

Form

Supplied as a liquid in 10mM HEPES, pH 7.5, 150mM sodium chloride, 100ug per ml BSA, 50% glycerol.

P Type

Pab

Purity

Purified by immunoaffinity chromatography.

Isotype

IgG

References

1. Aronica E, Gorter JA, Jansen GH, Leenstra S, Yankaya B, Troost D (2001) Expression of connexin 43 and connexin 32 gap-junction proteins in epilepsy-associated brain tumors and in the perilesional epileptic cortex. Acta Neuropathol (Berl) 101:449-459. 2. Bao X, Altenberg GA, Reuss L (2004a) Mechanism of regulation of the gap junction protein connexin 43 by protein kinase C-mediated phosphorylation. Am J Physiol Cell Physiol 286:C647-C654. 3. Bao X, Reuss L, Altenberg GA (2004b) Regulation of purified and reconstituted connexin 43 hemichannels by protein kinase C-mediated phosphorylation of Serine 368. J Biol Chem 279:20058-20066. 4. Yogo K, Ogawa T, Akiyama M, Ishida N, Takeya T (2002) Identification and functional analysis of novel phosphorylation sites in Cx43 in rat primary granulosa cells. FEBS Lett 531:132-136.

Additional Info

Recognizes rat Connexin43, phosphorylated at (Ser368). Species Sequence Homology: human and mouse.