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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1997-9-2
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pubmed:abstractText |
Glycosylphosphatidylinositol (GPI)-specific phospholipase D (GPI-PLD) is a secretory protein present in high amounts in mammalian body fluids. Its cDNA has been isolated and encodes a signal peptide of 23 amino acids and the mature protein of 816 amino acids. We generated cDNAs encoding a signal peptide-deficient and a GPI-anchored form of GPI-PLD and transiently transfected these constructs into COS-1 cells. The signal peptide-deficient form of GPI-PLD was expressed as a 90-kDa protein that was catalytically active and was localized intracellularly. Cells transfected with cDNA encoding the GPI-anchored form of GPI-PLD expressed a catalytically active enzyme of 100 kDa that could be labelled with [3H]ethanolamine demonstrating its modification by a GPI structure. Expression of the GPI-anchored form of GPI-PLD resulted in the release of endogenous GPI-anchored alkaline phosphatase from COS-1 cells, whereas expression of the intracellular form of GPI-PLD had no effect on membrane attachment of endogenous alkaline phosphatase. Similarly, in cells cotransfected with GPI-anchored placental alkaline phosphatase (PLAP) and the GPI-anchored form of GPI-PLD, PLAP was released into the cell culture supernatant while expression of the signal peptide-deficient form of GPI-PLD did not affect the amount of cell-associated PLAP.
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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:month |
Jul
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pubmed:issn |
0006-3002
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
24
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pubmed:volume |
1357
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
329-38
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pubmed:dateRevised |
2007-11-15
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pubmed:meshHeading |
pubmed-meshheading:9268057-Alkaline Phosphatase,
pubmed-meshheading:9268057-Animals,
pubmed-meshheading:9268057-COS Cells,
pubmed-meshheading:9268057-Cell Membrane,
pubmed-meshheading:9268057-Fluorescent Antibody Technique,
pubmed-meshheading:9268057-Glycosylphosphatidylinositols,
pubmed-meshheading:9268057-Phospholipase D,
pubmed-meshheading:9268057-Transfection,
pubmed-meshheading:9268057-Type C Phospholipases
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pubmed:year |
1997
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pubmed:articleTitle |
Expression of intracellular and GPI-anchored forms of GPI-specific phospholipase D in COS-1 cells.
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pubmed:affiliation |
Institute of Biochemistry and Molecular Biology, University of Bern, Switzerland.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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