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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1996-9-24
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pubmed:abstractText |
Phospholipase C (phosphatidylcholine phosphohydrolase, EC 3.1.4.3) and lipase (EC 3.1.1.3) activities were detected in the supernatant fluid of Pseudomonas fluorescens strain D cultures. A combination of ultrafiltration and successive chromatography through columns of Sephadex G-75 and DEAE-cellulose was used to purify the phospholipase C over 700-fold from the culture medium, with 28.5% yield. The purified enzyme appeared as a single band after polyacrylamide gel electrophoresis. The apparent molecular mass of the phospholipase C was 36,000 daltons when estimated by gel permeation chromatography. The purified enzyme hydrolysed phosphatidylcholine more efficiently than phosphatidylethanolamine. The synthetic substrate p-nitrophenylphosphorylcholine, phosphatidylinositol or sphingomyelin were not hydrolysed. Hydrolysis of phosphatidylcholine was inhibited by EDTA (1mM) and stimulated by Zn2+, Mg2+ ions and detergents. These properties of the enzyme indicate that it is distinct from the previously reported Ps. fluorescens phospholipase C.
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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/Edetic Acid,
http://linkedlifedata.com/resource/pubmed/chemical/Metals,
http://linkedlifedata.com/resource/pubmed/chemical/Phosphatidylcholines,
http://linkedlifedata.com/resource/pubmed/chemical/Phosphatidylethanolamines,
http://linkedlifedata.com/resource/pubmed/chemical/Type C Phospholipases
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pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
1121-7138
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
19
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
113-21
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pubmed:dateRevised |
2011-2-25
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pubmed:meshHeading |
pubmed-meshheading:8722307-Chromatography, Gel,
pubmed-meshheading:8722307-Chromatography, Ion Exchange,
pubmed-meshheading:8722307-Edetic Acid,
pubmed-meshheading:8722307-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:8722307-Hemolysis,
pubmed-meshheading:8722307-Hydrogen-Ion Concentration,
pubmed-meshheading:8722307-Metals,
pubmed-meshheading:8722307-Molecular Weight,
pubmed-meshheading:8722307-Phosphatidylcholines,
pubmed-meshheading:8722307-Phosphatidylethanolamines,
pubmed-meshheading:8722307-Pseudomonas fluorescens,
pubmed-meshheading:8722307-Substrate Specificity,
pubmed-meshheading:8722307-Type C Phospholipases
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pubmed:year |
1996
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pubmed:articleTitle |
Characterisation of a phospholipase C produced by Pseudomonas fluorescens.
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pubmed:affiliation |
Department of Biochemistry and Microbiology, University of Plovdiv, Bulgaria.
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pubmed:publicationType |
Journal Article
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