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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
7
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pubmed:dateCreated |
1991-10-29
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pubmed:abstractText |
A fibrinogenase from Vipera lebetina venom was isolated by gel filtration in a Superose 12 column prep grade HR 16/50 and by ion-exchange in a Mono Q HR 5/5 column. The purified enzyme, which was obtained with a yield of 8 mg from 60 mg of crude venom, is a glycoprotein having an isoelectric point of 5.9 +/- 0.1 and a mol. wt of 26,000 +/- 1000 as estimated by SDS-PAGE. The biochemical characterization of the enzyme revealed that it hydrolyzes readily the B beta chain of fibrinogen and the A alpha chain as well as fibrin and casein. Over a pH range from 4 to 11 the enzyme was not inactivated by a 20 min treatment at 90 degrees C. The isolated fibrinogenase is inhibited by ethylenediamine tetraacetic acid, dithiothreitol and L-cysteine but not by phenylmethylsulfonyl fluoride. On the other hand, it is activated by Ca2+ and Mg2+. Purified fibrinogenase up to a dose of 100 micrograms/mouse shows no toxicity and has no hemorrhagic activity.
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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/Caseins,
http://linkedlifedata.com/resource/pubmed/chemical/Fibrin,
http://linkedlifedata.com/resource/pubmed/chemical/Fibrinogen,
http://linkedlifedata.com/resource/pubmed/chemical/Thrombin,
http://linkedlifedata.com/resource/pubmed/chemical/Viper Venoms
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pubmed:status |
MEDLINE
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pubmed:issn |
0041-0101
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
29
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
827-36
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:1926182-Animals,
pubmed-meshheading:1926182-Blood Coagulation,
pubmed-meshheading:1926182-Caseins,
pubmed-meshheading:1926182-Chromatography, Gel,
pubmed-meshheading:1926182-Chromatography, Ion Exchange,
pubmed-meshheading:1926182-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:1926182-Fibrin,
pubmed-meshheading:1926182-Fibrinogen,
pubmed-meshheading:1926182-Hydrolysis,
pubmed-meshheading:1926182-Lethal Dose 50,
pubmed-meshheading:1926182-Mice,
pubmed-meshheading:1926182-Mice, Inbred BALB C,
pubmed-meshheading:1926182-Thrombin,
pubmed-meshheading:1926182-Viper Venoms
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pubmed:year |
1991
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pubmed:articleTitle |
Purification and characterization of a fibrinogenase from Vipera lebetina (desert adder) venom.
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pubmed:affiliation |
Institut Pasteur de Tunis, Belvedere, Tunisia.
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pubmed:publicationType |
Journal Article
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