Identification of protein fold and catalytic residues of g-hexachlorocyclohexane dehydrochlorinase LinA

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F01%3A00005567" target="_blank" >RIV/00216224:14310/01:00005567 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Identification of protein fold and catalytic residues of g-hexachlorocyclohexane dehydrochlorinase LinA
Original language description
g-Hexachlorocyclohexane dehydrochlorinase (LinA) is a unique dehydrochlorinase that has no homologous sequence at the amino acid-sequence level, and for which the evolutionary origin is unknown. We here propose that LinA is a member of a novel structuralsuperfamily of enzymes containing scytalone dehydratase, 3-oxo-D5-steroid isomerase, nuclear transport factor-2, and the b-subunit of naphthalene dioxygenase-all known structures with different functions. The catalytic and the active site residues of LinA are predicted based on its homology model. Nine mutants that carry substitutions in the proposed catalytic residues were constructed by site-directed mutagenesis. In addition to these, eight mutants that have a potential to make contact with the substrate were prepared by site-directed mutagenesis. These mutants were expressed in E. coli, and their activities in crude extract were evaluated. Most of the features of the LinA mutants could be explained on the basis of the present LinA m
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CE - Biochemistry
OECD FORD branch
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Project
<a href="/en/project/LN00A016" target="_blank" >LN00A016: BIOMOLECULAR CENTER</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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