Gastric parietal cell H(+)-K(+)-ATPase microsomes are associated with isoforms of ankyrin and spectrin.
Gastric parietal cell H(+)-K(+)-ATPase microsomes are associated with isoforms of ankyrin and spectrin.
复制标题
胃壁细胞 H( )-K( )-ATP 酶微粒体与锚蛋白和血影蛋白同工型相关。
DOI:
10.1152/ajpcell.1993.264.1.c63
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发表时间:
1993
期刊:
影响因子:
--
通讯作者:
Saccomani,G
中科院分区:
文献类型:
--
作者:
Smith,PR;Bradford,AL;Joe,EH;Angelides,KJ;Benos,DJ;Saccomani,G
Stimulation of HCl secretion by gastric parietal cells requires the fusion of cytoplasmic H(+)-K(+)-ATPase-bearing tubulovesicles with the apical membrane. This insertion of membrane results in a dramatic increase in apical surface area through the formation of microvilli. To elucidate the elements that may stabilize the newly inserted H(+)-K(+)-ATPase within the apical membrane, we searched for specific cytoskeletal proteins associating with the gastric enzyme. We document by immunoblot analysis that ankyrin, spectrin, and actin copurify with H(+)-K(+)-ATPase microsomes prepared from gastric parietal cells. Coprecipitation of 125I-labeled native erythrocyte ankyrin with the H(+)-K(+)-ATPase from gastric microsomes using anti-H(+)-K(+)-ATPase antibodies suggests that ankyrin associates with the H(+)-K(+)-ATPase. Indirect immunofluorescence and confocal microscopy show that ankyrin and H(+)-K(+)-ATPase cosegregate within resting and secreting parietal cells. Taken together, these data suggest that the association of the gastric H(+)-K(+)-ATPase with spectrin and actin is mediated by ankyrin and that this interaction contributes to the maintenance of the polarized distribution of the enzyme to the apical domain of gastric parietal cells during acid secretion.
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影响因子:
--
作者:
J. Morrow;C. Cianci;S. Kennedy;S. L. Warren
通讯作者:
S. L. Warren
影响因子:
29.4
作者:
Black,JA;Forte,TM;Forte,JG
通讯作者:
Forte,JG
影响因子:
--
作者:
Bennett,V
通讯作者:
Bennett,V
DOI:
--
发表时间:
1977
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
G. Saccomani;H. B. Stewart;D. Shaw;M. Lewin;G. Sachs
通讯作者:
G. Sachs
影响因子:
5.2
作者:
J. Cuppoletti;D. Malinowska
通讯作者:
D. Malinowska