CLONING AND EXPRESSION ANALYSIS OF A POTATO CDNA THAT ENCODES BRANCHING ENZYME - EVIDENCE FOR COEXPRESSION OF STARCH BIOSYNTHETIC GENES

Sonnewald U (1991)


Publication Status: Published

Publication Type: Journal article

Publication year: 1991

Journal

Publisher: SPRINGER VERLAG

Book Volume: 230

Pages Range: 39-44

Journal Issue: 1-2

Abstract

One of the key enzymes involved in the formation of amylopectin, which is the major component of starch, is branching enzyme. A cDNA for potato branching enzyme was cloned by screening a tuber-specific cDNA expression library using an antiserum directed against a denatured preparation of the protein. Complementation of an Escherichia coli strain deficient in branching enzyme was achieved using a construct derived from this clone. Analysis of the expression of the gene in potato revealed a close association with conditions favouring starch biosynthesis. The expression pattern of the gene coding for potato branching enzyme, as analyzed at the mRNA level, closely resembles that of AGPase S, a gene coding for one of the subunits of ADP-glucose pyrophosphorylase, which is the key regulatory enzyme in the starch biosynthetic pathway. This raises the possibility that enzymes involved in the pathway are coordinately regulated at the transcriptional level.

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How to cite

APA:

Sonnewald, U. (1991). CLONING AND EXPRESSION ANALYSIS OF A POTATO CDNA THAT ENCODES BRANCHING ENZYME - EVIDENCE FOR COEXPRESSION OF STARCH BIOSYNTHETIC GENES. Molecular and General Genetics MGG, 230(1-2), 39-44.

MLA:

Sonnewald, Uwe. "CLONING AND EXPRESSION ANALYSIS OF A POTATO CDNA THAT ENCODES BRANCHING ENZYME - EVIDENCE FOR COEXPRESSION OF STARCH BIOSYNTHETIC GENES." Molecular and General Genetics MGG 230.1-2 (1991): 39-44.

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