rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
3-4
|
pubmed:dateCreated |
1977-7-29
|
pubmed:abstractText |
A vesicular microsomal fraction isolated from hog fundic mucosa demonstrates the capacity to take up equal amounts of RB+ and Cl-. The amount of the Rb+ uptake is sensitive to the extravesicular osmolarity, and rate of uptake is sensitive to temperature. 86Rb+ efflux is dependent upon the cation composition of the diluting solution. ATP, but not beta-gamma methylene ATP, induces a reversible efflux of 86Rb+ from loaded vesicles, and this is dependent upon a functional K+-ATPase. The ATP induced efflux is not affected by CCCP (carbonyl cyanide m-chlorophenylhydrazone) or TCS (tetrachlorosalicylanilide) nor by lipid soluble ions or valinomycin. Nigericin inhibits the efflux by 40%. Uptake of the lipid soluble ion 14C-SCN- has been demonstrated and is enhanced by ATP only in the presence of valinomycin. The results are consistent with a neutral or isopotential exchange of H+ for Rb+ mediated by K+-ATPase.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Apr
|
pubmed:issn |
0022-2631
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
22
|
pubmed:volume |
32
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
361-81
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:17007-Adenosine Triphosphatases,
pubmed-meshheading:17007-Animals,
pubmed-meshheading:17007-Biological Transport, Active,
pubmed-meshheading:17007-Enzyme Activation,
pubmed-meshheading:17007-Gastric Mucosa,
pubmed-meshheading:17007-Hydrogen-Ion Concentration,
pubmed-meshheading:17007-Kinetics,
pubmed-meshheading:17007-Magnesium,
pubmed-meshheading:17007-Membranes,
pubmed-meshheading:17007-Microsomes,
pubmed-meshheading:17007-Nucleotidases,
pubmed-meshheading:17007-Osmolar Concentration,
pubmed-meshheading:17007-Potassium,
pubmed-meshheading:17007-Rubidium,
pubmed-meshheading:17007-Swine,
pubmed-meshheading:17007-Thiocyanates
|
pubmed:year |
1977
|
pubmed:articleTitle |
Cation transport by gastric H+:K+ ATPase.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.
|