Molecular cloning and characterization of ADP-glucose pyrophosphorylase cDNA clones isolated from pea cotyledons

Molecular cloning and characterization of ADP-glucose pyrophosphorylase cDNA clones isolated from... Three ADP-glucose pyrophosphorylase (ADPG-PPase) cDNA clones have been isolated and characterized from a pea cotyledon cDNA library. Two of these clones (Psagps1 and Psagps2) encode the small subunit of ADPG-PPase. The deduced amino acid sequences for these two clones are 95% identical. Expression of these two genes differs in that the Psagps2 gene shows comparatively higher expression in seeds relative to its expression in other tissues. Psagps2 expression also peaks midway through seed development at a time in which Psagps1 transcripts are still accumulating. The third cDNA isolated (Psagpl1) encodes the large subunit of ADPG-PPase. It shows greater selectivity in expression than either of the small subunit clones. It is highly expressed in sink organs (seed, pod, and seed coat) and undetectable in leaves. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Molecular cloning and characterization of ADP-glucose pyrophosphorylase cDNA clones isolated from pea cotyledons

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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:1005752311130
Publisher site
See Article on Publisher Site

Abstract

Three ADP-glucose pyrophosphorylase (ADPG-PPase) cDNA clones have been isolated and characterized from a pea cotyledon cDNA library. Two of these clones (Psagps1 and Psagps2) encode the small subunit of ADPG-PPase. The deduced amino acid sequences for these two clones are 95% identical. Expression of these two genes differs in that the Psagps2 gene shows comparatively higher expression in seeds relative to its expression in other tissues. Psagps2 expression also peaks midway through seed development at a time in which Psagps1 transcripts are still accumulating. The third cDNA isolated (Psagpl1) encodes the large subunit of ADPG-PPase. It shows greater selectivity in expression than either of the small subunit clones. It is highly expressed in sink organs (seed, pod, and seed coat) and undetectable in leaves.

Journal

Plant Molecular BiologySpringer Journals

Published: Sep 29, 2004

References

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