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The Mr 28,000 gap junction proteins from rat heart and liver are different but related

Nicholson, Bruce J. and Gros, Daniel B. and Kent, Stephen B. H. and Hood, Leroy E. and Revel, Jean-Paul (1985) The Mr 28,000 gap junction proteins from rat heart and liver are different but related. Journal of Biological Chemistry, 260 (11). pp. 6514-6517. ISSN 0021-9258. http://resolver.caltech.edu/CaltechAUTHORS:NICjbc85

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Abstract

The sequence of the amino-terminal 32 residues of the rat heart Mr 28,000 gap junction protein presented here allows, for the first time, a sequence comparison of gap junctional proteins from different tissues (heart and liver). Comparison of the rat heart gap junction protein sequence and that available from rat liver reveals 43% sequence identity and conservative changes at an additional 25% of the positions. Both proteins exhibit a hydrophobic domain which could represent a transmembrane span of the junction. This result unequivocally demonstrates the existence of at least two forms of the gap junction protein. As yet, no homology is evident between the gap junctional proteins of either heart or liver and main intrinsic protein from rat eye lens.


Item Type:Article
Additional Information:Copyright © 1985 by the American Society for Biochemistry and Molecular Biology. (Received for publication, January 25, 1985) Our thanks go to Dr. Barbara Yancey and Jan Hoh for constructive discussions and to the Biology Division’s secretarial staff for typing the manuscript. The research was supported by Research Grant GM06965 and Biomedical Research Support Program RR07003 from the National Institutes of Health, National Cancer Institute Core Grant CA 32911, in addition to grants from Fondation Langlois, Centre National de la Recherche Scientifique (AIP Biotechnologies), Institut National de la Santé et de la Recherche Médicale (Grant 84.5.014), ANVAR (Grant X84.05.015.T), the Fondation pour la Recherche Medicale (to D.B.G.), and by an American Heart Association (Los Angeles Affiliate) Fellowship (to B.J.N.). The costs of publication of this article were defrayed in part by the payment of page charges. This article must therefore be hereby marked “advertisement” in accordance with 18 U.S.C. Section 1734 solely to indicate this fact.
Record Number:CaltechAUTHORS:NICjbc85
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:NICjbc85
Alternative URL:http://www.jbc.org/cgi/content/abstract/260/11/6514
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10979
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:21 Jun 2008
Last Modified:26 Dec 2012 10:07

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