期刊
FRONTIERS IN BIOSCIENCE-LANDMARK
卷 10, 期 -, 页码 2373-2396出版社
FRONTIERS IN BIOSCIENCE INC
DOI: 10.2741/1704
关键词
neuroscience; nervous system; neurons; Na+; K+; ATPase; isoforms; review
资金
- NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES [R01DK067284] Funding Source: NIH RePORTER
- NIDDK NIH HHS [DK067284-01] Funding Source: Medline
The Na/K-ATPase is a complex of integral membrane proteins that carries out active transport of sodium and potassium across the cell plasma membrane, and maintains chemical gradients of these ions. The alpha subunit of the Na/K-ATPase has several isoforms that are expressed in a cell type-and tissue-dependent manner. In adult vertebrates, while kidney cells express mostly alpha1, muscle and glial cells - alpha1 and alpha2, and sperm cells - alpha1 and alpha4 isoforms of Na/K-ATPase, neurons may express alpha1, alpha2, alpha3 or any combination of these isoforms, and evidence suggests that neuronal type is the determining factor. The functional significance of multiple isoforms of the Na/K-ATPase and their non-uniform expression, and the link between neuron function and expression of a given isoform of the Na/K-ATPase in particular, remains unknown. Several hypotheses on this account were introduced, and in this work we will review the present status of these hypotheses, and their standing in application to recent data on the expression of isoforms of the Na/K-ATPase in the peripheral nervous system of vertebrate animals.
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