作者: Maria A. Carrondo , Carlos Frazão , Gabriela Silva , Cláudio M. Gomes , Pedro Matias
DOI: 10.1038/80961
关键词: Flavodoxin 、 Oxidoreductase 、 Biology 、 Biochemistry 、 Rubredoxin 、 Monomer 、 Enzyme 、 Desulfovibrio gigas 、 Metabolic pathway 、 Oxygen
摘要: Desulfovibrio gigas is a strict anaerobe that contains well-characterized metabolic pathway enables it to survive transient contacts with oxygen. The terminal enzyme in this pathway, rubredoxin:oxygen oxidoreductase (ROO) reduces oxygen water direct and safe way. 2.5 A resolution crystal structure of ROO shows each monomer homodimeric consists novel combination two domains, flavodoxin-like domain Zn-β-lactamase-like di-iron center for dioxygen reduction. This the first member superfamily enzymes widespread facultative anaerobes, indicating its broad physiological significance.