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Any of a class of enzymes that catalyze the conversion of one isomer into another.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Chemistry) any enzyme that catalyses the conversion of one isomeric form of a compound to another
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(aɪˈsɒm əˌreɪs, -ˌreɪz)

any of a class of enzymes that catalyze reactions involving intramolecular rearrangements.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.isomerase - an enzyme that catalyzes its substrate to an isomeric form
enzyme - any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
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for Personal communications Quartinary structures of xylose isomerases.
For example, superoxide dismutase (Saro_0483), a tetratricopeptide repeat protein (Saro_0209), and two peptidyl-prolyl cis-trans isomerases (Saro_0837 and Saro_2251) are known to be localized in the periplasm in other Gram-negative bacteria.
Among his topics are from Jack beans to designer genes, methods for studying enzymatic reactions, hydrolytic and group transfer enzymes, enzymatic carbon-carbon bond formation, isomerases, and non-enzymatic biological catalysis.
(52) Based on the enzymatic properties of this enzyme, which are different from those of known IPP isomerases, we proposed that this orfD product is a novel type of IPP isomerase with a sequence that has no similarity to those of known IPP isomerases.
Selective inactivation of parvulin like peptidyl-prolyl cis/trans isomerases by juglone.
Starch modification: alteration of [alpha]-amylases, glucoamylases, starch for food, syrups, and pullulanases, glucose fungal industrial use, including [beta]-amylase, pullulanase, fermentation for ethanol production maltogenic amylase, isomerases, for gasoline blends.
[[DELTA].sup.3],[[DELTA].sup.2]-Enoyl-CoA isomerases (Characterization of the mitochondrial isoenzyme in the rat).
(33) This is particularly interesting in that dietary trans-fat is almost entirely consumed as singly unsaturated C18 FAs, whereas C18:2 isomers are, at least to some extent, interconverted by enoyl isomerases, (22) and thus may reflect both nondietary and dietary constituents of the cell membrane FA content.
The plant GSTs, in addition to their enzymatic activities, have less well characterized roles in endogenous metabolism including functioning as GSH-dependent peroxidases counteracting oxidative stress (Bartling et al., 1993; Cummins et al., 1999; Roxas et al., 1997), or GSH-dependent isomerases (Dixon et al., 2000, Thorn et al., 2001), and noncatalytically acting as flavonoid-binding proteins (Mueller et al., 2000), stress signalling proteins (Loyall et al., 2000), regulators of apoptosis (Kampranis et al., 2000).
Insights into the catalytic mechanism of peptidyl prolyl cis/trans isomerases. Front.
Bandlish RK, Michael-Hess J, Epting KL, Vieille C, Kelly RM (2002) Glucose to fructose conversion at high temperature with xi-lose (glucose) isomerases from Streptomyces Murinus and two hyperthermophilic Thermotoga species.
More particularly, the present invention discloses novel sucrose isomerases, polynucleotides encoding these sucrose isomerases, methods for isolating such polynucleotides and nucleic acid constructs that express these polynucleotides.