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  • Title: Some properties of latent collagenase from human synovial fluid.
    Author: Wize J, Knäuper V, Tschesche H.
    Journal: Acta Biochim Pol; 1990; 37(1):201-6. PubMed ID: 1965084.
    Abstract:
    Latent collagenase has been isolated in pure form from the rheumatoid synovial fluid. The final preparation, activated by trypsin, yielded a collagenase of specific activity 2,227 units/mg. Electrophoresis in sodium dodecyl sulfate polyacrylamide gels revealed a protein doublet of 54 and 50 kDa. Trypsin or HgCl2 activation resulted in disappearance of the doublet and emergence of a new doublet of 47 and 43 kDa. The latent collagenase could also be activated by leucocyte cathepsin G or plasmin. Neither the latent nor the active collagenase from synovial fluid showed any cross-reactivity with the antibodies against leucocyte collagenase. The trypsin activated collagenase degraded collagen type I, II, III giving typical cleavage products but did not degrade type IV and V collagen.
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