Source:http://linkedlifedata.com/resource/pubmed/id/16244441
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
10
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pubmed:dateCreated |
2005-10-24
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pubmed:abstractText |
A starch-hydrolyzing enzyme from Schwanniomyces occidentalis has been reported to be a novel glucoamylase, but there is no conclusive proof that it is glucoamylase. An enzyme having the hydrolytic activity toward soluble starch was purified from a strain of S. occidentalis. The enzyme showed high catalytic efficiency (k(cat)/K(m)) for maltooligosaccharides, compared with that for soluble starch. The product anomer was alpha-glucose, differing from glucoamylase as a beta-glucose producing enzyme. These findings are striking characteristics of alpha-glucosidase. The DNA encoding the enzyme was cloned and sequenced. The primary structure deduced from the nucleotide sequence was highly similar to mold, plant, and mammalian alpha-glucosidases of alpha-glucosidase family II and other glucoside hydrolase family 31 enzymes, and the two regions involved in the catalytic reaction of alpha-glucosidases were conserved. These were no similarities to the so-called glucoamylases. It was concluded that the enzyme and also S. occidentalis glucoamylase, had been already reported, were typical alpha-glucosidases, and not glucoamylase.
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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 |
Oct
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pubmed:issn |
0916-8451
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
69
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1905-13
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pubmed:meshHeading |
pubmed-meshheading:16244441-Catalytic Domain,
pubmed-meshheading:16244441-Cloning, Molecular,
pubmed-meshheading:16244441-Conserved Sequence,
pubmed-meshheading:16244441-Fungal Proteins,
pubmed-meshheading:16244441-Glucan 1,4-alpha-Glucosidase,
pubmed-meshheading:16244441-Hydrolysis,
pubmed-meshheading:16244441-Kinetics,
pubmed-meshheading:16244441-Sequence Alignment,
pubmed-meshheading:16244441-Starch,
pubmed-meshheading:16244441-alpha-Glucosidases
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pubmed:year |
2005
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pubmed:articleTitle |
Glucoamylase originating from Schwanniomyces occidentalis is a typical alpha-glucosidase.
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pubmed:affiliation |
Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
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pubmed:publicationType |
Journal Article
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