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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1988-6-20
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pubmed:abstractText |
Cellulomonas fimi produces an endoglucanase and an exoglucanase which bind strongly to cellulose. Each enzyme contains three distinct regions: a short sequence of about 20 amino acids containing only proline and threonine (the Pro-Thr box); an irregular region, rich in hydroxyamino acids, of low charge density, and which is predicted to have little secondary structure; and an ordered region of higher charge density which contains a potential active site, and which is predicted to have secondary structure. The Pro-Thr box is conserved almost perfectly in the two enzymes. The irregular regions are 50% conserved, and the conserved sequences include four Asn-Xaa-Ser/Thr sites. The ordered regions appear not to be conserved, but the potential active sites both have the sequence Glu-Xaa7-Asn-Xaa6-Thr; they occur at widely separated sites in the two regions. The order of the regions is reversed in the two enzymes: irregular-Pro-Thr box-ordered in the endoglucanase; ordered-Pro-Thr box-irregular in the exoglucanase. The genes for the two enzymes appear to have arisen by shuffling of two conserved sequences and either one or two other sequences.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0887-3585
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
1
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
335-41
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pubmed:dateRevised |
2010-11-18
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pubmed:meshHeading |
pubmed-meshheading:3130625-Actinomycetales,
pubmed-meshheading:3130625-Amino Acid Sequence,
pubmed-meshheading:3130625-Binding Sites,
pubmed-meshheading:3130625-Biological Evolution,
pubmed-meshheading:3130625-Cellulase,
pubmed-meshheading:3130625-Genes, Bacterial,
pubmed-meshheading:3130625-Glucan 1,3-beta-Glucosidase,
pubmed-meshheading:3130625-Glucosidases,
pubmed-meshheading:3130625-Molecular Sequence Data,
pubmed-meshheading:3130625-Protein Conformation,
pubmed-meshheading:3130625-Sequence Homology, Nucleic Acid,
pubmed-meshheading:3130625-beta-Glucosidase
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pubmed:year |
1986
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pubmed:articleTitle |
Sequence conservation and region shuffling in an endoglucanase and an exoglucanase from Cellulomonas fimi.
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pubmed:affiliation |
Department of Microbiology, University of British Columbia, Vancouver, Canada.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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