Journal Article

Orientation of Pea Stem Mitochondrial H<sup>+</sup>-Pyrophosphatase and Its Different Characteristics from the Tonoplast Counterpart

Angelo Vianello, Marco Zancani, Valentino Casolo and Francesco Macri

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 38, issue 1, pages 87-90
Published in print January 1997 | ISSN: 0032-0781
Published online January 1997 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029090
Orientation of Pea Stem Mitochondrial H+-Pyrophosphatase and Its Different Characteristics from the Tonoplast Counterpart

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Proton pumping pyrophosphatase (H+-PPiase) of pea stem mitochondria appears to be localized on the inner surface of the inner membrane. Aminohexanediphosphonate and dichloromethylenediphosphonate exert different inhibitory effects on this activity and on that of tonoplast. Antibody raised against membrane-bound mitochondrial H+-PPiase does not react with tonoplast vesicles. Thus, plant mitochondrial H+PPiase seems to have a molecular structure different from that of vacuolar H+-PPiase.

Keywords: Diphosphonate; Inorganic pyrophosphatase; Pisum sativum; Pyrophosphate analogue; Sub-mito-chondrial particle; Tonoplast

Journal Article.  0 words. 

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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