Radical formation on a conserved tyrosine residue is crucial for DyP activity.
Radical formation on a conserved tyrosine residue is crucial for DyP activity.
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保守酪氨酸残基上的自由基形成对于 DyP 活性至关重要
DOI:
10.1016/j.abb.2013.07.007
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发表时间:
2013
影响因子:
3.9
通讯作者:
Klaus Piontek
中科院分区:
文献类型:
--
作者:
Eric Strittmatter;Sabrina Wachter;Christiane Liehrs;René Ullrich;Martin Hofrichter;Dietmar A. Plattner;Klaus Piontek
Dye-decolorizing peroxidases (DyPs) are able to cleave bulky anthraquinone dyes. The recently published crystal structure ofAauDyPI reveals that a direct oxidation in the distal heme cavity can be excluded for most DyP substrates. It is shown that a surface-exposed tyrosine residue acts as a substrate interaction site for bulky substrates. This amino acid is conserved in eucaryotic DyPs but is missing in the structurally related chlorite dismutases (Clds). Dye-decolorizing peroxidases of procaryotic origin equally possess a conserved tyrosine in the same region of the polypeptide albeit not at the homologous position.
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