An analysis of the proteinases ofTrichomonas vaginalisby polyacrylamide gel electrophoresis

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Abstract
SUMMARY: The proteinases ofTrichomonas vaginalishave been analysed by electrophoresis in polyacrylamide gels containing denatured haemoglobin. Seven bands of activity were detected indicating multiple proteinases. All of the enzymes were stimulated by 1 mM dithiothreitol and had inhibitor sensitivities characteristic of cysteine proteinases. The enzymes differed significantly, however, with respect to pH optima and relative sensitivities to inhibitors.