Purification and characterization of bovine interstitial collagenase and tissue inhibitor of metalloproteinases

Barry D. Sudbeck, John J. Jeffrey, Howard G. Welgus, Robert P. Mecham, David McCourt, William C. Parks

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

In this report we describe the purification of bovine interstitial collagenase and provide information on its substrate specificity, kinetic parameters of catalytic activity, and amino terminal protein sequence. In addition, we present a simplified protocol for the purification of bovine tissue inhibitor of metalloproteinases (TIMP). Collagenase was purified by sequential chromatography through heparin-Sepharose, DEAE-Sepharose, and green-agarose, resulting in a product that was >95% pure as judged by polyacrylamide electrophoresis. Typical of other interstitial collagenases, the isolated bovine protein was activated by protease and organomercurial treatment. It also demonstrated a kinetics and substrate specificity similar to those of human collagenase. TIMP was purified by sequential chromatography through heparin-Sepharose and DEAE-Sepharose followed by reversephase HPLC. The purified protein had a size, N-terminal sequence, and inhibitor activity similar to those of other mammalian TIMPs. Partial peptide sequences suggested that bovine collagenase and TIMP have strong sequence homology to their human homologues.

Original languageEnglish
Pages (from-to)370-376
Number of pages7
JournalArchives of Biochemistry and Biophysics
Volume293
Issue number2
DOIs
StatePublished - Mar 1992

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