rdf:type |
|
lifeskim:mentions |
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pubmed:issue |
33
|
pubmed:dateCreated |
2005-8-16
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pubmed:abstractText |
A d-galacturonic acid reductase and the corresponding gene were identified from the mold Hypocrea jecorina (Trichoderma reesei). We hypothesize that the enzyme is part of a fungal d-galacturonic acid catabolic pathway which has not been described previously and which is distinctly different from the bacterial pathway. H. jecorina grown on d-galacturonic acid exhibits an NADPH-dependent d-galacturonic acid reductase activity. This activity is absent when the mold is grown on other carbon sources. The d-galacturonic acid reductase was purified, and tryptic digests of the purified protein were sequenced. The open reading frame of the corresponding gene was then cloned from a cDNA library. The open reading frame was functionally expressed in the yeast Saccharomyces cerevisiae. A histidine-tagged protein was purified, and the enzyme kinetics were characterized. The enzyme converts in a reversible reaction from d-galacturonic acid and NADPH to l-galactonic acid and NADP. The enzyme also exhibits activity with d-glucuronic acid and dl-glyceraldehyde.
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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 |
Aug
|
pubmed:issn |
0006-2960
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:day |
23
|
pubmed:volume |
44
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
11234-40
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:16101307-Alcohol Oxidoreductases,
pubmed-meshheading:16101307-Base Sequence,
pubmed-meshheading:16101307-Cloning, Molecular,
pubmed-meshheading:16101307-Fungal Proteins,
pubmed-meshheading:16101307-Gene Expression,
pubmed-meshheading:16101307-Gene Library,
pubmed-meshheading:16101307-Hexuronic Acids,
pubmed-meshheading:16101307-Hypocrea,
pubmed-meshheading:16101307-Molecular Sequence Data,
pubmed-meshheading:16101307-NADP,
pubmed-meshheading:16101307-Oxidation-Reduction,
pubmed-meshheading:16101307-Saccharomyces cerevisiae,
pubmed-meshheading:16101307-Substrate Specificity,
pubmed-meshheading:16101307-Sugar Acids
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pubmed:year |
2005
|
pubmed:articleTitle |
Identification in the mold Hypocrea jecorina of the first fungal D-galacturonic acid reductase.
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pubmed:affiliation |
VTT Biotechnology, P.O. Box 1500, 02044 VTT, Espoo, Finland.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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