Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, UNAM, Mexico, Mexico.
Curr Microbiol. 2011 Mar;62(3):933-43. doi: 10.1007/s00284-010-9806-z.
Debaryomyces hansenii is a spoilage yeast able to grow in a variety of ecological niches, from seawater to dairy products. Results presented in this article show that (i) D. hansenii has an inherent resistance to H2O2 which could be attributed to the fact that this yeast has a basal catalase activity which is several-fold higher than that observed in Saccharomyces cerevisiae under the same culture conditions, (ii) D. hansenii has two genes (DhCTA1 and DhCTT1) encoding two catalase isozymes with a differential enzymatic activity profile which is not strictly correlated with a differential expression profile of the encoding genes.
汉逊德巴利酵母是一种能在各种生态环境中生长的腐败酵母，从海水到乳制品。本文介绍的结果表明：(i)汉逊德巴利酵母对 H2O2 具有固有抗性，这可能归因于该酵母具有基础过氧化氢酶活性，是在相同培养条件下观察到的酿酒酵母的数倍；(ii)汉逊德巴利酵母有两个基因（DhCTA1 和 DhCTT1）编码两种过氧化氢酶同工酶，其酶活性谱有差异，但与编码基因的表达谱没有严格的相关性。
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