The S-adenosylmethionine dependent O-methyltransferase PaMTH1: a longevity assurance factor protecting Podospora anserina against oxidative stress.

The S-adenosylmethionine dependent O-methyltransferase PaMTH1: a longevity assurance factor protecting Podospora anserina against oxidative stress.
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DOI:
10.18632/aging.100029
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发表时间:
2009-03-03
期刊:
Aging
影响因子:
--
通讯作者:
Osiewacz HD
Osiewacz HD
中科院分区:
其他
文献类型:
--
作者:
Kunstmann B;Osiewacz HD

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PaMTH1 是一种 O-甲基转移酶,催化多酚邻位羟基的甲基化。在鹅足孢菌老化过程中,该蛋白质在细胞质和线粒体基质中积累。 PaMth1 缺失菌株的构建和表征为该蛋白在防止金属诱导的氧化应激中的功能提供了额外的证据。研究发现,PaMth1 的缺失会导致对外源性氧化应激的抵抗力下降,并导致寿命缩短,这表明 PaMTH1 在涉及寿命控制的新分子途径中作为长寿保证因子发挥着作用。
PaMTH1 is an O-methyltransferase catalysing the methylation of vicinal hydroxyl groups of polyphenols. The protein accumulates during ageing of Podospora anserina in both the cytosol and in the mitochondrial matrix. The construction and characterisation of a PaMth1 deletion strain provided additional evidence about the function of the protein in the protection against metal induced oxidative stress. Deletion of PaMth1 was found to lead to a decreased resistance against exogenous oxidative stress and to a shortened lifespan suggesting a role of PaMTH1 as a longevity assurance factor in a new molecular pathway involved in lifespan control.
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