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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
11-12
|
pubmed:dateCreated |
1999-2-26
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pubmed:abstractText |
The presence of (Na(+)+K+)ATPase activity in CL14 clone and NIH NTY strain of Trypanosoma cruzi epimastigotes is demonstrated. A Na+ plus K+ stimulated ATPase activity is found in both strains. The optimal Na+/K+ ratio is 5:1 and 9:1 in CL14 clone and NIH NTY strain, respectively. In both strains, vanadate completely inhibits the ouabain-sensitive ATPase activity indicating that it belongs to the P-type (E1/E2) family of ion-transporting ATPases. The I50 for vanadate is 0.66 +/- 0.04 and 0.04 +/- 0.02 microM in CL14 clone and NIH NTY strain, respectively. These data indicate that both strains of T. cruzi epimastigotes express the ouabain- and vanadate-sensitive (Na(+)+K+)ATPase activity. On the other hand, the discrepancy between the parameters analyzed for the inhibitors suggests that they express different isoforms of this enzyme.
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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:issn |
0939-5075
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
53
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1049-54
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pubmed:dateRevised |
2009-11-4
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pubmed:meshHeading |
pubmed-meshheading:9933970-Animals,
pubmed-meshheading:9933970-Catalysis,
pubmed-meshheading:9933970-Enzyme Inhibitors,
pubmed-meshheading:9933970-Ouabain,
pubmed-meshheading:9933970-Phosphorylation,
pubmed-meshheading:9933970-Sodium-Potassium-Exchanging ATPase,
pubmed-meshheading:9933970-Trypanosoma cruzi,
pubmed-meshheading:9933970-Vanadates
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pubmed:articleTitle |
Trypanosoma cruzi epimastigotes express the ouabain- and vanadate-sensitive (Na(+)+K+)ATPase activity.
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pubmed:affiliation |
Laboratório de Fisiologia Renal, Universidade Federal do Rio de Janeiro, Brazil.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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