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Title

Structure of a plasma membrane H’-ATPase gene from the plant Arabidopsis thaliana

AuthorsPardo, José M. ; Serrano, Ramón
Issue Date1989
PublisherAmerican Society for Biochemistry and Molecular Biology
CitationJournal of Biological Chemistry 264/15): 8557-8562 (1989)
AbstractPhysiological and biochemical studies have sugested the plant plasma membrane H+-ATPase controls many important aspects of plant physiology, including growth, development, nutrient transport, and stomata movements. We have started the genetic analysis of this enzyme by isolating both genomic and cDNA clones of an H+-ATPasegene from Arabidopsis thaliana. The cloned gene is interrupted by 15 introns, and there is partial conservation of exon boundaries with respect to animal (Na+/K+)a- nd Ca2+-ATPases.In general, the relationship between exons and the predicted secondary and transmembrane structure of dif- ferent ATPases with phosphorylatedintermediate support a somewhat degenerate correspondence between exons and structural modules. The predicted amino acid sequence of the plant H+-ATPaseis more closely related to fungal andprotozoan H+-ATPasesthan to bacterial K+-ATPases or to animal (Na+/K+)-, (H+/K+)-,and Ca2+-ATPases. There is evidence for the existence of at least three isoforms of the plant H+- ATPase gene, These results open the way for a molecular approach to the structure and function of the plant proton pump.
Description6 pages, 5 figures.
URIhttp://hdl.handle.net/10261/55862
ISSN0021-9258
E-ISSN1083-351X
Appears in Collections:(IRNAS) Artículos
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