Characterization of ppEG1, a member of a multigene family which encodes endo-β-1,4-glucanase in peach

Characterization of ppEG1, a member of a multigene family which encodes endo-β-1,4-glucanase in... Three cDNA clones (pCel10, pCel20 and pCel30), each encoding different endo-β-1,4-glucanases in peach, were obtained by RT-PCR and their expression investigated by northern analysis during leaf and fruit abscission and during fruit development. This analysis allowed the detection of only the pCel10-related mRNA. A 2.2 kb transcript accumulated in ethylene activated abscission zones of leaves and fruits, and ppEG1 (Prunus persica endoglucanase 1) the gene coding for pCel10, was isolated and characterized. A cDNA (termed pCel1), containing the entire open reading frame of ppEG1, was obtained and its sequence used to define the structure of the gene and the exon/intron boundaries. ppEG1 consists of 7 exons and encodes a 497 amino acid polypeptide including a putative signal peptide at the N-terminus. The similarity of this peach endo-β-1,4-glucanase (EGase, EC 3.2.1.4) is high (76.3%) with the ripening avocado and low (47.3%) with the bean abscission EGase. A 1639 bp region at the 5′ of the transcription start site shows regulatory functions in transgenic tobacco plants, as judged by its ability to drive GUS expression in cell separation-related events. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Characterization of ppEG1, a member of a multigene family which encodes endo-β-1,4-glucanase in peach

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 1997 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1005884429760
Publisher site
See Article on Publisher Site

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