Acid activation of protyrosinase from Aspergillus oryzae: homo-tetrameric protyrosinase is converted to active dimers with an essential intersubunit disulfide bond at acidic pH.

Abstract excerpt

Aspergillus oryzae protyrosinase (pro-TY) has a unique feature that the proenzyme is activated under conditions of acidic pH. The pro-TY was inactive at pH 7.0. The latent enzyme was activated at pH 3.0, and was slightly activated by sodium dodecyl sulfate (SDS). The molecular masses of the pro-T...

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