rdf:type |
|
lifeskim:mentions |
umls-concept:C0011744,
umls-concept:C0022262,
umls-concept:C0022956,
umls-concept:C0033727,
umls-concept:C0348011,
umls-concept:C0441712,
umls-concept:C0614635,
umls-concept:C1280500,
umls-concept:C1415104,
umls-concept:C1514468,
umls-concept:C1705822
|
pubmed:issue |
19
|
pubmed:dateCreated |
1981-11-22
|
pubmed:abstractText |
Fluoromethylglyoxal in the presence of glutathione has been shown to undergo a novel glyoxalase I-catalyzed product partitioning to S-fluorolactoylglutathione and S-pyruvylglutathione with fluoride elimination. While the partition ratio (fluoride eliminated/total fluoride) was insensitive to pH 5.5-7.5 and concentrations of substrate and glyoxalase I, it was species-dependent. When [1-2H]fluoromethylglyoxal was reacted with glyoxalase I, an increase in the partition ratio and retention of deuterium in the product fluorolactate was observed. This result can only be explained by a selective primary isotope effect on the protonation of an enediol intermediate relative to fluoride elimination.
|
pubmed:grant |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Oct
|
pubmed:issn |
0021-9258
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
10
|
pubmed:volume |
256
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
9785-8
|
pubmed:dateRevised |
2007-11-14
|
pubmed:meshHeading |
pubmed-meshheading:7024272-Aldehydes,
pubmed-meshheading:7024272-Animals,
pubmed-meshheading:7024272-Cattle,
pubmed-meshheading:7024272-Deuterium,
pubmed-meshheading:7024272-Glyoxal,
pubmed-meshheading:7024272-Kinetics,
pubmed-meshheading:7024272-Lactoylglutathione Lyase,
pubmed-meshheading:7024272-Liver,
pubmed-meshheading:7024272-Lyases,
pubmed-meshheading:7024272-Mice,
pubmed-meshheading:7024272-Radioisotope Dilution Technique,
pubmed-meshheading:7024272-Rats,
pubmed-meshheading:7024272-Saccharomyces cerevisiae,
pubmed-meshheading:7024272-Thiolester Hydrolases
|
pubmed:year |
1981
|
pubmed:articleTitle |
Deuterium isotope effects on the product partitioning of fluoromethylglyoxal by glyoxalase I. Proof of a proton transfer mechanism.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
|