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1 article(s) from Williams, Ian H

Catalysis: transition-state molecular recognition?

Ian H. Williams

Beilstein J. Org. Chem. 2010, 6, 1026–1034, doi:10.3762/bjoc.6.117

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Graphical Abstract

Figure 1: Free energy profiles for reactions of substrate S uncatalysed and catalysed by enzyme E, showing ho...

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Scheme 1: S_N2 methyl transfer from SAM to catechol catalysed by COMT.

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Figure 2: Energetic analysis of the compression hypothesis for enzyme-catalysed methyl transfer.

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Figure 3: Catalyst design for methyl transfer: (a) the reaction to be catalysed; (b) dipoles favourably align...

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Scheme 2: S_N2 methyl transfer (a) uncatalysed and (b) within a cryptand cavity.

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Figure 4: Free energy analysis of COMT catalysis.

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Scheme 3: Formation of glycosyl-enzyme covalent intermediate COV.

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Figure 5: Conformational change of the xylose ring from chair (via envelope) with long O_YH_Y^…O_ring hydrogen bo...

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Figure 6: AM1/OPLS potentials of mean force for formation of glycosyl-enzyme covalent intermediate between 4-...

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Figure 7: Hydrogen-bond distances H_Y^…O_ring (red) and H_Y^…O_nuc (blue) to boat conformer of RC, TS and glycosyl-...

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Published 03 Nov 2010

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