Wiley, Angewandte Chemie International Edition, 18(40), p. 3377-3380, 2001
DOI: 10.1002/1521-3773(20010917)40:18<3377::aid-anie3377>3.0.co;2-8
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Two alternate conformations of the adenosyl ligand of the cofactor are observed in the active site of the coenzyme B12 dependent enzyme glutamate mutase. This result shows ribose pseudorotation to be an elegant and safe mechanism for shuttling the "hot" methylene radical between the cofactor and substrate (see scheme).