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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1987-4-27
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pubmed:abstractText |
Fusion of a highly purified fraction of rat liver peroxisomal membranes to planar lipid bilayers incorporates large, cation-selective voltage-dependent pores. The PK/PCl ratio of these pores, estimated in KCl gradients, is close to 4. The pores display several conductance states and spend most of the time open at voltages near 0 mV, closing at more positive and negative voltages. At voltages near 0 mV the most frequent open state has a conductance of 2.4 nS in 0.3 M KCl. At voltages more positive and more negative than 10 mV the most frequent open state displays a conductance of 1.2 nS in 0.3 M KCl. With these results pore diameters of 3 and 1.5 nm, respectively, can be estimated. We suggest that these pores might account for the unusually high permeability of peroxisomes to low molecular weight solutes. Fusion also incorporates a perfectly anion-selective, two-open states channel with conductances of 50 and 100 pS in 0.1 M KCl.
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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:issn |
0022-2631
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
94
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
285-91
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2435912-Animals,
pubmed-meshheading:2435912-Anions,
pubmed-meshheading:2435912-Cations,
pubmed-meshheading:2435912-Electric Conductivity,
pubmed-meshheading:2435912-Intracellular Membranes,
pubmed-meshheading:2435912-Ion Channels,
pubmed-meshheading:2435912-Lipid Bilayers,
pubmed-meshheading:2435912-Liver,
pubmed-meshheading:2435912-Male,
pubmed-meshheading:2435912-Microbodies,
pubmed-meshheading:2435912-Rats
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pubmed:year |
1986
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pubmed:articleTitle |
Large cation-selective pores from rat liver peroxisomal membranes incorporated to planar lipid bilayers.
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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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