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Biochem Biophys Res Commun. 1991 Aug 15;178(3):1312-8.

Connexon integrity is maintained by non-covalent bonds: intramolecular disulfide bonds link the extracellular domains in rat connexin-43.

Author information

1
Division of Biology, California Institute of Technology, Pasadena 91125.

Abstract

Rat heart connexin-43 (RCx43) has been isolated using a modified procedure that is rapid and can be used with fresh or frozen hearts. When RCx43 is isolated in the presence of the alkylating reagent iodoacetamide, no intermolecular disulfide bonds are found. However, the alkylated RCx43 does have at least one intramolecular disulfide bond. By using site directed antibodies and proteolytic cleavage the location of the intramolecular disulfide bonding is shown between the two extracellular loops of RCx43.

PMID:
1651718
DOI:
10.1016/0006-291x(91)91037-d
[Indexed for MEDLINE]

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