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Monomeric alcohol oxidase is preferentially digested by a novel protease from Candida boidinii

Stewart, M. Q., Dijk, R. V., Veenhuis, M. & Goodman, J. M., 30-Jan-2002, In : Biochimica et Biophysica Acta-Molecular Cell Research. 1542, 1-3, p. 160-172 13 p., PII S0167-4889(01)00176-8.

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DOI

  • Mary Q. Stewart
  • Ralf van Dijk
  • Marten Veenhuis
  • Joel M. Goodman

A protease activity has been partially purified from peroxisomal matrix fractions of the methylotrophic yeast Candida hoidinii. The enzyme migrates as a single peak on a sucrose velocity gradient with an apparent native molecular mass of similar to 80-90 kDa. Activity can be recovered from nonreducing sodium dodecyl sulfate gels as a similar to 20 kDa species, suggesting it is an oligomer. The protein exhibits chymotrypsin-like activity and cleaves the model compound suc-L-L-V-Y-AMC. Additionally, monomers of alcohol oxidase (AO), an abundant protein of C. boidinii peroxisomes, generated in vitro or in pulse-radiolabeled cells, are preferentially sensitive to degradation by the protease. Sensitivity is lost over time in vivo as AO folds and matures into octamers. suggesting that the protease may be involved in these processes. (C) 2002 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Article numberPII S0167-4889(01)00176-8
Pages (from-to)160-172
Number of pages13
JournalBiochimica et Biophysica Acta-Molecular Cell Research
Volume1542
Issue number1-3
Publication statusPublished - 30-Jan-2002

    Keywords

  • peroxisome: microbody, serine protease, alcohol oxidase, Candida boidinii, HANSENULA-POLYMORPHA, MEMBRANE-PROTEINS, IMPORT, PEROXISOMES, THIOLASE, METHANOL, ENZYME, STEP

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