Reference: Andrews FH and McLeish MJ (2012) Substrate specificity in thiamin diphosphate-dependent decarboxylases. Bioorg Chem 43:26-36

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Abstract

Thiamin diphosphate (ThDP) is the biologically active form of vitamin B(1), and ThDP-dependent enzymes are found in all forms of life. The catalytic mechanism of this family requires the formation of a common intermediate, the 2alpha-carbanion-enamine, regardless of whether the enzyme is involved in C-C bond formation or breakdown, or even formation of C-N, C-O and C-S bonds. This demands that the enzymes must screen substrates prior to, and/or after, formation of the common intermediate. This review is focused on the group for which the second step is the protonation of the 2alpha-carbanion, i.e., the ThDP-dependent decarboxylases. Based on kinetic data, sequence/structure alignments and mutagenesis studies the factors involved in substrate specificity have been identified.CI - Copyright (c) 2011 Elsevier Inc. All rights reserved.

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Journal Article | Review
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Andrews FH, McLeish MJ
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