| pubmed-article:11244073 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:11244073 | lifeskim:mentions | umls-concept:C1089703 | lld:lifeskim |
| pubmed-article:11244073 | lifeskim:mentions | umls-concept:C0079866 | lld:lifeskim |
| pubmed-article:11244073 | lifeskim:mentions | umls-concept:C0439605 | lld:lifeskim |
| pubmed-article:11244073 | lifeskim:mentions | umls-concept:C0007382 | lld:lifeskim |
| pubmed-article:11244073 | lifeskim:mentions | umls-concept:C0871161 | lld:lifeskim |
| pubmed-article:11244073 | lifeskim:mentions | umls-concept:C1099119 | lld:lifeskim |
| pubmed-article:11244073 | pubmed:issue | 7 | lld:pubmed |
| pubmed-article:11244073 | pubmed:dateCreated | 2001-3-13 | lld:pubmed |
| pubmed-article:11244073 | pubmed:abstractText | The 2,3-dihydroxybiphenyl 1,2-dioxygenase from Sphingomonas xenophaga strain BN6 (BphC1) oxidizes 3-chlorocatechol by a rather unique distal ring cleavage mechanism. In an effort to improve the efficiency of this reaction, bphC1 was randomly mutated by error-prone PCR. Mutants which showed increased activities for 3-chlorocatechol were obtained, and the mutant forms of the enzyme were shown to contain two or three amino acid substitutions. Variant enzymes containing single substitutions were constructed, and the amino acid substitutions responsible for altered enzyme properties were identified. One variant enzyme, which contained an exchanged amino acid in the C-terminal part, revealed a higher level of stability during conversion of 3-chlorocatechol than the wild-type enzyme. Two other variant enzymes contained amino acid substitutions in a region of the enzyme that is considered to be involved in substrate binding. These two variant enzymes exhibited a significantly altered substrate specificity and an about fivefold-higher reaction rate for 3-chlorocatechol conversion than the wild-type enzyme. Furthermore, these variant enzymes showed the novel capability to oxidize 3-methylcatechol and 2,3-dihydroxybiphenyl by a distal cleavage mechanism. | lld:pubmed |
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| pubmed-article:11244073 | pubmed:language | eng | lld:pubmed |
| pubmed-article:11244073 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11244073 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:11244073 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:11244073 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:11244073 | pubmed:month | Apr | lld:pubmed |
| pubmed-article:11244073 | pubmed:issn | 0021-9193 | lld:pubmed |
| pubmed-article:11244073 | pubmed:author | pubmed-author:BürgerSS | lld:pubmed |
| pubmed-article:11244073 | pubmed:author | pubmed-author:StollSS | lld:pubmed |
| pubmed-article:11244073 | pubmed:author | pubmed-author:RiegertUU | lld:pubmed |
| pubmed-article:11244073 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:11244073 | pubmed:volume | 183 | lld:pubmed |
| pubmed-article:11244073 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:11244073 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:11244073 | pubmed:pagination | 2322-30 | lld:pubmed |
| pubmed-article:11244073 | pubmed:dateRevised | 2010-9-14 | lld:pubmed |
| pubmed-article:11244073 | pubmed:meshHeading | pubmed-meshheading:11244073... | lld:pubmed |
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| pubmed-article:11244073 | pubmed:meshHeading | pubmed-meshheading:11244073... | lld:pubmed |
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| pubmed-article:11244073 | pubmed:meshHeading | pubmed-meshheading:11244073... | lld:pubmed |
| pubmed-article:11244073 | pubmed:year | 2001 | lld:pubmed |
| pubmed-article:11244073 | pubmed:articleTitle | Altering catalytic properties of 3-chlorocatechol-oxidizing extradiol dioxygenase from Sphingomonas xenophaga BN6 by random mutagenesis. | lld:pubmed |
| pubmed-article:11244073 | pubmed:affiliation | Institut für Mikrobiologie, Universität Stuttgart, 70569 Stuttgart, Germany. | lld:pubmed |
| pubmed-article:11244073 | pubmed:publicationType | Journal Article | lld:pubmed |
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