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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
13
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pubmed:dateCreated |
1982-8-26
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pubmed:abstractText |
Leader (signal) peptidases cleave the NH2-terminal leader sequences of newly synthesized secreted and membrane proteins during, or shortly after, they insert across the membrane. We have constructed a plasmid, pPS9, in which the structural gene for Escherichia coli leader peptidase is under transcriptional control of a lambda promoter, PR. pPS9 also codes for a temperature-sensitive lambda repressor, causing repression of expression of the plasmid leader peptidase gene at 30 degrees C and rapid synthesis of this enzyme at 42 degrees C. Under appropriate growth regimens, leader peptidase is overproduced 75-fold. Leader peptidase from this strain has been purified to homogeneity. It consists of a 37,000-dalton polypeptide which co-migrates with enzyme activity on DEAE-cellulose and chromatofocusing chromatography. Antibody to this leader peptidase is described.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/DNA Restriction Enzymes,
http://linkedlifedata.com/resource/pubmed/chemical/Endopeptidases,
http://linkedlifedata.com/resource/pubmed/chemical/Membrane Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Serine Endopeptidases,
http://linkedlifedata.com/resource/pubmed/chemical/type I signal peptidase
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pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0021-9258
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
10
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pubmed:volume |
257
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
7898-902
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6282859-DNA Restriction Enzymes,
pubmed-meshheading:6282859-Endopeptidases,
pubmed-meshheading:6282859-Escherichia coli,
pubmed-meshheading:6282859-Genes,
pubmed-meshheading:6282859-Immunodiffusion,
pubmed-meshheading:6282859-Membrane Proteins,
pubmed-meshheading:6282859-Molecular Weight,
pubmed-meshheading:6282859-Operon,
pubmed-meshheading:6282859-Plasmids,
pubmed-meshheading:6282859-Serine Endopeptidases,
pubmed-meshheading:6282859-Species Specificity,
pubmed-meshheading:6282859-Temperature,
pubmed-meshheading:6282859-Transcription, Genetic
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pubmed:year |
1982
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pubmed:articleTitle |
The isolation of homogeneous leader peptidase from a strain of Escherichia coli which overproduces the enzyme.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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