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Báo cáo khóa học: Two distinct heterodisulfide reductase-like enzymes in the sulfate-reducing archaeon Archaeoglobus profundus
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Heterodisulfide reductase (Hdr) is a unique disulfide reduc-tase that plays a key role in the energy metabolism of methanogenic archaea. Two types of Hdr have been identi-fied and characterized from distantly related methanogens. Here we show that the sulfate-reducing archaeonArchaeo-globus profunduscultivated on H2/sulfate forms enzymes related toboth typesofHdr.Fromthemembrane fractionof A. profundus, a two-subunit enzyme (HmeCD) composedof ab-type cytochrome and a hydrophilic iron–sulfur protein was isolated. ...
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