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Comparative Control of a Branch-Point Enzyme in Microorganisms

Department of Biology, State University of New York, Buffalo, New York 14214
Department of Microbiology, University of Washington, Seattle, Washington 98105

ABSTRACT

Thirty-two genera of microorganisms were identified with one of six distinctive control patterns for the enzyme 3-deoxy-D-arabino-heptulosonate-7-phosphate synthetase. These patterns included sequential feedback inhibition, isoenzyme feedback inhibition, cumulative feedback inhibition, and three (apparent) simple one-effector patterns. Documentation is provided of an overwhelming tendency for control patterns to be strongly conserved among the member species of the various genera that were examined.

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• Gosset, G., Bonner, C. A., Jensen, R. A. (2001). Microbial Origin of Plant-Type 2-Keto-3-Deoxy-D-arabino-Heptulosonate 7-Phosphate Synthases, Exemplified by the Chorismate- and Tryptophan-Regulated Enzyme from Xanthomonas campestris. J. Bacteriol. 183: 4061-4070 [Abstract] [Full Text]  
• Datta, P. (1969). Regulation of Branched Biosynthetic Pathways in Bacteria. Science 165: 556-562