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Molecular Analysis of the Plant Gene Encoding Cytosolic Phosphoglucose Isomerase by B. R. Thomas; D. Laudencia-Chingcuanco; L. D. Gottlieb is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Molecular Analysis of the Plant Gene Encoding Cytosolic Phosphoglucose Isomerase about?

The gene encoding a cytosolic isozyme of phosphoglucose isomerase (PGI, EC 5.3.1.9) was isolated from Clarkia lewisii, a wild flower native to California, and the structure and sequence of the entire coding region determined. PGI catalyzes an essential step in glycolysis and carbohydrate biosynthesis in plants. Spanning about 6 kb, the gene has 23 exons and 22 introns, the highest number yet reported in plants. The exons range in size from 43 to 156 nt and encode a protein of 569 amino acids. The protein is about 44-46% identical to the inferred protein sequences of pig, Escherichia coli and Saccharomyces cerevisiae. All of the introns are bordered with the consensus 5'-GT...AG-3' dinucleotides. The longest intron includes a large stem-loop structure bounded by a perfect 9 nt direct repeat. We cloned the PGI gene from a genomic library prepared from a single plant of known PGI genotype. The locus and allele of the clone were identified by matching restriction fragments to fragments from genetically defined genomic DNAs by Southern hybridization.

Who reads Molecular Analysis of the Plant Gene Encoding Cytosolic Phosphoglucose Isomerase?

Author

B. R. Thomas; D. Laudencia-Chingcuanco; L. D. Gottlieb

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0167-4412)

Published

1992

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)