Increased Enzyme Flexibility Doesnot Necessarily Lead to Substrate Promiscuity
نویسندگان
چکیده
منابع مشابه
Increased Enzyme Flexibility Doesn’t Necessarily Lead to Substrate Promiscuity
Copyright: © 2014 Raval SR, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Understanding the molecular basis of substrate promiscuity shown by some enzymes has been quite elusive. Enzymes that catalyze...
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Introductory courses in biochemistry teach that enzymes are specific for their substrates and the reactions they catalyze. Enzymes diverging from this statement are sometimes called promiscuous. It has been suggested that relaxed substrate and reaction specificities can have an important role in enzyme evolution; however, enzyme promiscuity also has an applied aspect. Enzyme condition promiscui...
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Catalytic promiscuity is a widespread, but poorly understood, phenomenon among enzymes with particular relevance to the evolution of new functions, drug metabolism, and in vitro biocatalyst engineering. However, there is at present no way to quantitatively measure or compare this important parameter of enzyme function. Here we define a quantitative index of promiscuity (I) that can be calculate...
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Xenematide, a cyclic depsipeptide antibiotic produced by Xenorhabdus nematophila, had a candidate nonribosomal peptide synthetase (NRPS) with atypical features. Differential metabolite analysis between a mutant and wildtype validated that this stand-alone NRPS was required for xenematide production, and further analysis led to a series of new xenematide derivatives encoded by the same NRPS. Our...
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The ABC-transporters OpuB and OpuC from Bacillus subtilis function as osmoprotectant import systems. Their structural genes have most likely evolved through a duplication event but the two transporters are remarkably different in their substrate profile. OpuB possesses narrow substrate specificity, while OpuC is promiscuous. We assessed the functionality of hybrids between these two ABC-transpo...
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ژورنال
عنوان ژورنال: Journal of Thermodynamics & Catalysis
سال: 2015
ISSN: 2157-7544
DOI: 10.4172/2157-7544.1000e131