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Science 2 December 1988:
Vol. 242. no. 4883, pp. 1308 - 1311
DOI: 10.1126/science.2461589

Articles

Science, Vol 242, Issue 4883, 1308-1311
Copyright © 1988 by American Association for the Advancement of Science


articles

A 115-kD polypeptide immunologically related to erythrocyte band 3 is present in Golgi membranes

S Kellokumpu, L Neff, S Jamsa-Kellokumpu, R Kopito, and R Baron

Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06510.

Band 3 multigene family consists of several distinct but structurally related polypeptides which are probably involved in the transport of anions across the plasma membrane of both erythrocytes and nonerythroid cells. A novel member of this family of polypeptides that resides in the Golgi complex was identified with antibodies to Band 3. The Golgi antigen had a larger molecular size and was antigenically distinct from Band 3 in the amino-terminal domain. It was expressed most prominently in cells that secrete large amounts of sulfated proteins and proteoglycans. This polypeptide may participate in sulfate transport across Golgi membranes.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)