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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
9
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pubmed:dateCreated |
1989-4-25
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pubmed:abstractText |
The precursor to rat liver mitochondrial aspartate aminotransferase has been expressed in Escherichia coli JM105 using the pKK233-2 expression vector. This mammalian natural precursor has been isolated as a soluble dimeric protein. The amino-terminal sequence and the amino acid composition of the isolated protein correspond to those predicted from the inserted cDNA (Mattingly, J. R., Jr., Rodriguez-Berrocal, F. J., Gordon, J., Iriarte, A., and Martinez-Carrion, M. (1987) Biochem. Biophys. Res. Commun. 149, 859-865). The isolated precursor contains bound pyridoxal phosphate and shows catalytic activity with a specific activity equal to that of the mature form of the enzyme. This precursor can also be processed by mitochondria into a form with the sodium dodecyl sulfate-polyacrylamide gel electrophoresis mobility of mature enzyme. The isolation of this precursor as a stable and catalytically active entity indicates that the presequence peptide does not necessarily interfere with much of the folding and basic structural properties of the mature protein component.
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pubmed:grant | |
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 |
Mar
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pubmed:issn |
0021-9258
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
25
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pubmed:volume |
264
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
4782-6
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2647743-Animals,
pubmed-meshheading:2647743-Aspartate Aminotransferases,
pubmed-meshheading:2647743-Blotting, Western,
pubmed-meshheading:2647743-Catalysis,
pubmed-meshheading:2647743-Coenzymes,
pubmed-meshheading:2647743-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:2647743-Escherichia coli,
pubmed-meshheading:2647743-Kinetics,
pubmed-meshheading:2647743-Mitochondria, Liver,
pubmed-meshheading:2647743-Plasmids,
pubmed-meshheading:2647743-Protein Precursors,
pubmed-meshheading:2647743-Rats
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pubmed:year |
1989
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pubmed:articleTitle |
Isolation and properties of a liver mitochondrial precursor protein to aspartate aminotransferase expressed in Escherichia coli.
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pubmed:affiliation |
Division of Molecular Biology and Biochemistry, School of Basic Life Sciences, University of Missouri, Kansas City 64110.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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