Component A3 of the methylcoenzyme M methylreductase system of Methanobacterium thermoautotrophicum delta H: resolution into two components.
AUTOR(ES)
Rouvière, P E
RESUMO
Component A3 of the methylcoenzyme M methylreductase system of Methanobacterium thermoautotrophicum (strain delta H) has been resolved into two fractions. One, named component A3a, was defined as the fraction required along with components A2 and C to produce methane from 2-(methylthio)ethanesulfonate when titanium(III) citrate was used as the sole source of electrons. The second one, named component A3b, was required when H2 and 7-mercapto-N-heptanoyl-O-phospho-L-threonine were provided as the dual source of electrons. Component A3a was a large iron-sulfur protein aggregate (Mr 500,000) and is most likely involved in providing electrons at a low potential for the reductive activation of component C.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=210250Documentos Relacionados
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