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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1995-5-11
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pubmed:abstractText |
The activity of a calcium-activated nonselective (Ca-NS+) channel in a rat insulinoma cell line (CRI-G1) is inhibited by pyridine nucleotides in excised patches. The effects of all four pyridine nucleotides tested, beta-NAD+, beta-NADH, beta-NADP+ and beta-NADPH were very similar when tested at 0.1 mM, and at 1 mM the phosphorylated forms, beta-NADP+ and beta-NADPH, appeared to be slightly more potent than beta-NAD+ and beta-NADH. All the pyridine nucleotides tested reduced both the open state probability of the channel and the number of functional channels observed in a single patch. The application of beta-NAD+, but not of the other nucleotides tested, to the cytoplasmic surface of isolated inside-out patches from CRI-G1 cells opened a novel nonselective cation channel (the beta-NAD(+)-NS+ channel). The activity of this new channel is calcium sensitive and may also be inhibited by AMP.
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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 |
Dec
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pubmed:issn |
0022-2631
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
142
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
299-307
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7535854-Animals,
pubmed-meshheading:7535854-Calcium,
pubmed-meshheading:7535854-Insulinoma,
pubmed-meshheading:7535854-Ion Channels,
pubmed-meshheading:7535854-Islets of Langerhans,
pubmed-meshheading:7535854-Kinetics,
pubmed-meshheading:7535854-Membrane Potentials,
pubmed-meshheading:7535854-NAD,
pubmed-meshheading:7535854-NADP,
pubmed-meshheading:7535854-Pancreatic Neoplasms,
pubmed-meshheading:7535854-Patch-Clamp Techniques,
pubmed-meshheading:7535854-Rats,
pubmed-meshheading:7535854-Tumor Cells, Cultured
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pubmed:year |
1994
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pubmed:articleTitle |
The effects of pyridine nucleotides on the activity of a calcium-activated nonselective cation channel in the rat insulinoma cell line, CRI-G1.
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pubmed:affiliation |
Department of Clinical Biochemistry, University of Cambridge, New Addenbrookes Hospital, United Kingdom.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
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