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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
|
pubmed:dateCreated |
1983-6-17
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pubmed:abstractText |
Snail intestine was found to actively accumulate L-phenylalanine. The uptake of L-phenylalanine was a saturable function of the amino acid concentration and sodium-dependent. The KT for L-phenylalanine uptake increased as the Na+ concentration was reduced, being 2.2 mM at 71.4 mM Na+, 5.9 mM at 10 mM Na+ and 9.9 mM at 0 mM Na+. Variations in Na+ concentration were without effect on the Vmax. At low concentrations of L-phenylalanine (0.5 and 1 mM) the tissue was able to concentrate the amino acid even in the absence of Na+. L-phenylalanine uptake was competitively inhibited by L-methionine (KI = 0.58 mM). This finding suggests that both amino acids might share a common transport system, being the affinity for L-methionine higher than for L-phenylalanine.
|
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Dec
|
pubmed:issn |
0034-9402
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
38
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
403-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7170427-Animals,
pubmed-meshheading:7170427-Binding, Competitive,
pubmed-meshheading:7170427-Biological Transport, Active,
pubmed-meshheading:7170427-Helix (Snails),
pubmed-meshheading:7170427-Intestinal Absorption,
pubmed-meshheading:7170427-Kinetics,
pubmed-meshheading:7170427-Methionine,
pubmed-meshheading:7170427-Phenylalanine,
pubmed-meshheading:7170427-Sodium
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pubmed:year |
1982
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pubmed:articleTitle |
Active transport of L-phenylalanine by snail intestine, Helix (Cryptomphalus) aspersa.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|