In vitro dissociation and re‐assembly of peroxisomal alcohol oxidases of Hansenula polymorpha and Pichia pastoris

FEBS Letters

Harder, Wim¹  Evers, Melchior E.¹  Veenhuis, Marten¹ 

[1] Department of Microbiology, Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands

关键词: Alcohol oxidase;    Peroxisomal matrix protein;    Protein assembly;    Protein reactivation;   

DOI  :  10.1016/0014-5793(95)00653-Q

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

We have studied the in vitro inactivation/dissociation and subsequent reactivation/re-assembly of peroxisomal alcohol oxidases (AO) from the yeasts Hansenula polymorpha and Pichia pastoris. Both proteins are homo-oligomers consisting of eight identical subunits, each containing one FAD as the prosthetic group. They were both rapidly inactivated upon incubation in 80% glycerol, due to their dissociation into the constituting subunits, which however still contained FAD. Dilution of dissociated AO in neutral buffer lead to reactivation of the protein due to AO re-assembly, as was demonstrated by non-denaturing PAGE. After use of mixtures of purified AO from H. polymorpha and P. pastoris active hybrid AO oligomers were formed. When prior to dissociation FAD was chemically removed from AO, reactivation or re-assembly did not occur independent of externally added FAD.

【 授权许可】

Unknown