Linked Life Data

2570693

Source:http://linkedlifedata.com/resource/pubmed/id/2570693

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-10-25
pubmed:abstractText
Acetyl-CoA hydrolase, which hydrolyzes acetyl-CoA to acetate and CoASH, was isolated from Saccharomyces cerevisiae and demonstrated by protein sequence analysis to be NH2-terminally blocked. The enzyme was purified 1080-fold to apparent homogeneity by successive purification steps using DEAE-Sepharose, gel filtration and hydroxylapatite. The molecular mass of the native yeast acetyl-CoA hydrolase was estimated to be 64 +/- 5 kDa by gel-filtration chromatography. SDS/PAGE analysis revealed that the denatured molecular mass was 65 +/- 2 kDa and together with that for the native enzyme indicates that yeast acetyl-CoA hydrolase was monomeric. The enzyme had a pH optimum near 8.0 and its pI was approximately 5.8. Several acyl-CoA derivatives of varying chain length were tested as substrates for yeast acetyl-CoA hydrolase. Although acetyl-CoA hydrolase was relatively specific for acetyl-CoA, longer acyl-chain CoAs were also hydrolyzed and were capable of functioning as inhibitors during the hydrolysis of acetyl-CoA. Among a series of divalent cations, Zn2+ was demonstrated to be the most potent inhibitor. The enzyme was inactivated by chemical modification with diethyl pyrocarbonate, a histidine-modifying reagent.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0014-2956
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
184
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
21-8
pubmed:dateRevised
2007-7-23
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Purification and characterization of an acetyl-CoA hydrolase from Saccharomyces cerevisiae.
pubmed:affiliation
Department of Molecular Biology, Massachusetts General Hospital, Boston 02114.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't