Component A3 of the methylcoenzyme M methylreductase system of Methanobacterium thermoautotrophicum delta H: resolution into two components
- 1 September 1989
- journal article
- research article
- Published by American Society for Microbiology in Journal of Bacteriology
- Vol. 171 (9) , 4556-4562
- https://doi.org/10.1128/jb.171.9.4556-4562.1989
Abstract
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.This publication has 33 references indexed in Scilit:
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