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Protein Science, Vol 6, Issue 7 1511-1515, Copyright © 1997 by Cold Spring Harbor Laboratory Press
ARTICLE |
T. L. HOLTET, J. H. GRAVERSEN, I. CLEMMENSEN, H. C. THOGERSEN and M. ETZERODT
Laboratory of Gene Expression, Department of Molecular and Structural Biology, University of Aarhus, Denmark
Tetranectin, a plasminogen-binding protein belonging to the family of C-type lectins, was expressed in E. coli and converted to its native form by in vitro refolding and proteolytic processing. Recombinant tetranectin--as well as natural tetranectin from human plasma--was shown by chemical cross-linking analysis and SDS-PAGE to be a homo-trimer in solution as are other known members of the collectin family of C-type lectins. Biochemical evidence is presented showing that an N-terminal domain encoded within exons 1 and 2 of the tetranectin gene is necessary and sufficient to govern subunit trimerization.
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