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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
AtPNP-A is a systemically mobile natriuretic peptide immunoanalogue with a role in Arabidopsis thaliana cell volume regulation
FEBS Letters, Volume 556, No. 1-3, Year 2004
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Description
Cellular and physiological evidence suggests the presence of a novel class of systemically mobile plant molecules that are recognized by antibodies against vertebrate atrial natriuretic peptides (ANPs). In order to characterize the function of these immunoanalogues we have expressed the full-length recombinant (AtPNP-A[1-126]) and demonstrate that this molecule induces osmoticum-dependent H2O uptake into protoplasts at nanomolar concentrations and thus affects cell volume. A similar response is also seen with a recombinant that does not contain the signal peptide (AtPNP-A[26-126]) as well as a short domain (AtPNP-A[33-66]) that shows homology to the vertebrate peptide. Taken together, these findings suggest that AtPNP-A has an important and systemic role in plant growth and homeostasis. © 2003 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
Authors & Co-Authors
Morse, Monique V.
South Africa, Bellville
University of the Western Cape
Pironcheva, Ganka Lubenova
South Africa, Bellville
University of the Western Cape
Gehring, Chris A.
South Africa, Bellville
University of the Western Cape
Statistics
Citations: 56
Authors: 3
Affiliations: 1
Identifiers
Doi:
10.1016/S0014-5793(03)01384-X
ISSN:
00145793