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Plant Physiol. 2000 Apr;122(4):1187-92.

The rug3 locus of pea encodes plastidial phosphoglucomutase.

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  • 1John Innes Centre, Norwich Research Park, Norwich NR4 7UH, United Kingdom.

Abstract

Two cDNA clones were isolated from pea (Pisum sativum L.) and their deduced amino acid sequences shown to have significant homology to phosphoglucomutases from eukaryotic and prokaryotic sources. The longer cDNA contained a putative transit-peptide-encoding sequence, supporting the hypothesis that the isolated clones represent the cytosolic and plastidial isoforms of phosphoglucomutase in pea. Plastid protein import assays confirmed that the putative plastidial isoform was targeted to the plastid stroma where it was proteolytically processed. Expression, co-segregation, linkage, and molecular analyses have confirmed that the rug3 locus of pea encodes plastidial phosphoglucomutase. Mutations at this locus result in a near-starchless phenotype of the plant.

PMID:
10759514
[PubMed - indexed for MEDLINE]
PMCID:
PMC58953
Free PMC Article
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