Wednesday 15 May 2013
E. coli expression of active nitrile hydratase from Aurantimonas manganoxydans needs cobalt ions
This paper in Biotechnology Letters from Pei and co-workers gives details of a cobalt centred nitrile hydratase from Aurantimonas manganoxydans, and the importance of getting the concentration right for good level of expression and activity. (DOI 10.1007/s10529-013-1215-5)
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In enzymology, nitrile hydratases (NHases; EC 4.2.1.84) are mononuclear iron or non-corrinoid cobalt enzymes that catalyse the hydration of diverse nitriles to their corresponding amides: R-C≡N + H2O → R-C(O)NH2. nitrile hydratase
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