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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5 Pt 1
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pubmed:dateCreated |
1992-12-23
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pubmed:abstractText |
Myocardial synthesis of phosphatidylinositol 4,5-bisphosphate (PIP2) is highly compartmentalized in the sarcolemmal membrane. Sarcolemmal vesicles contain endogenous phospholipase C (PLC), but the identity of sarcolemmal PLC and its relationship to soluble PLC have not been determined previously. Sarcolemmal and cytosolic PLC were prepared from canine myocardium and characterized by DEAE-cellulose chromatography and by immunoblotting with monoclonal and polyclonal antibodies to isoenzymes of PLC (PLC beta, PLC gamma, and PLC delta). DEAE-cellulose chromatography resolved two forms of cytosolic PLC that were identified as an 85-kDa form of PLC delta and a 145-kDa form of PLC gamma. In contrast, DEAE-cellulose chromatography resolved a single form of sarcolemmal PLC that was identified as an 85-kDa form of PLC delta. These data demonstrate that PLC gamma and PLC delta are expressed in canine myocardium and that an 85-kDa form of PLC delta is selectively associated with sites of PIP2 synthesis in a highly enriched preparation of sarcolemma. These data do not exclude the existence of additional isoenzymes of sarcolemmal PLC that may have been removed during isolation of sarcolemmal membranes.
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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 |
Nov
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pubmed:issn |
0002-9513
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
263
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
C1021-8
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pubmed:dateRevised |
2007-11-15
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pubmed:meshHeading |
pubmed-meshheading:1443097-Animals,
pubmed-meshheading:1443097-Chromatography, Ion Exchange,
pubmed-meshheading:1443097-Dogs,
pubmed-meshheading:1443097-Immunoblotting,
pubmed-meshheading:1443097-Isoenzymes,
pubmed-meshheading:1443097-Myocardium,
pubmed-meshheading:1443097-Sarcolemma,
pubmed-meshheading:1443097-Solubility,
pubmed-meshheading:1443097-Subcellular Fractions,
pubmed-meshheading:1443097-Type C Phospholipases
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pubmed:year |
1992
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pubmed:articleTitle |
Association of phospholipase C-delta with a highly enriched preparation of canine sarcolemma.
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pubmed:affiliation |
Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110.
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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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