Okumura Y, Inoue N, Nikai T. Isolation and Characterization of a Novel Acid Proteinase, Tropiase from Candida tropicalis IFO 0589.
ACTA ACUST UNITED AC 2007;
48:19-25. [PMID:
17287719 DOI:
10.3314/jjmm.48.19]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A novel acid proteinase (Tropiase) was isolated from Candida tropicalis IFO 0589 by DE52-cellulose, and DEAE-Cosmogel column chromatographies. The purified tropiase gave a single band on disc polyacrylamide gel electrophoresis, isoelectric focusing and sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis. The enzyme preparation had a molecular weight of 23,900, isoelectric point of pH 5.1, optimum pH range of 7 to 9 and possessed 208 amino acid residues. The enzyme hydrolyzed casein, fibrinogen, keratin and collagen. The purified tropiase demonstrated hemorrhagic and capillary permeability-increasing activities. Inhibition of tropiase occurred with leupeptin and N-bromosuccinimide, however, no inhibition was observed with alpha(2)-macroglobulin, soybean trypsin inhibitor, benzamidine-HCl or diisopropyl fluorophosphate.
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