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Related Experiment Videos

The plant plasma membrane H(+)-ATPase: structure, function and regulation.

P Morsomme1, M Boutry

  • 1Unité de Biochimie Physiologique, Université Catholique de Louvain, Croix du Sud, 2-20, 1348, Louvain-la-Neuve, Belgium.

Biochimica Et Biophysica Acta
|April 5, 2000
PubMed
Summary

Plant plasma membrane proton-pumping ATPase (H(+)-ATPase) research has advanced, revealing gene organization, expression patterns, and regulatory mechanisms. Future studies will integrate expression, function, and regulation of H(+)-ATPase isoforms in plants.

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Area of Science:

  • Plant molecular biology
  • Biochemistry
  • Membrane transport

Background:

  • The plasma membrane H(+)-ATPase (H(+)-ATPase) is crucial for generating proton motive force, essential for ion and metabolite transport in plants.
  • Recent advancements have clarified the H(+)-ATPase gene family, expression patterns, and isoform-specific kinetics and regulation.

Purpose of the Study:

  • To review recent progress in understanding the H(+)-ATPase family at the gene and protein levels.
  • To highlight the integrated investigation of H(+)-ATPase expression, function, and regulation in the context of whole plant physiology.

Main Methods:

  • Gene identification and organization analysis.
  • In situ hybridization for expression monitoring.
  • Heterologous expression in yeast for enzymatic property studies.

Related Experiment Videos

  • Site-directed mutagenesis to investigate regulatory regions.
  • Phenotypic analysis of transgenic plants with altered H(+)-ATPase expression.

    • Main Results:

    • The H(+)-ATPase is encoded by approximately 10 genes with distinct expression patterns across species.
    • Heterologous expression in yeast revealed distinct enzymatic properties of H(+)-ATPase isoforms.
    • Phosphorylation and 14-3-3 protein binding are key regulatory mechanisms.
    • Transgenic plant analyses are beginning to elucidate isoform-specific roles in plant physiology.

    Conclusions:

    • Significant progress has been made in understanding H(+)-ATPase at both gene and protein levels.
    • Future research will focus on an integrated approach to study H(+)-ATPase expression, function, and regulation in plants.
    • This integrated approach is essential for a comprehensive understanding of H(+)-ATPase roles in whole plant physiology.