Structure and formation of microplasmin.

H. L. Wu, G. Y. Shi, R. C. Wohl, M. L. Bender

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42 Citations (Scopus)


The structure of human microplasmin, prepared from plasmin in alkaline solution, has been studied. Microplasmin consists of two polypeptide chains connected by disulfide bonds. One polypeptide is the B chain of plasmin consisting of 230 amino acids, and the other peptide is the COOH-terminal portion of the A chain of plasmin consisting of 31 amino acid residues. Microplasmin has a molecular weight of 28,635, calculated from its primary sequence. It is slightly more positively charged than plasminogen and is a more hydrophobic molecule. The proposed scheme for the formation of microplasmin involves autolysis at specific peptide bonds and scrambling of especially sensitive disulfide bonds in alkaline solution.

Original languageEnglish
Pages (from-to)8793-8795
Number of pages3
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number24
Publication statusPublished - 1987 Dec

All Science Journal Classification (ASJC) codes

  • General


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