Literature DB >> 14281723

CONTROL OF ENZYME ACTIVITY IN GROWING BACTERIAL CELLS BY CONCERTED FEEDBACK INHIBITION.

L BURLANT, P DATTA, H GEST.   

Abstract

Amino acids of the aspartic acid family are synthesized in bacteria through a multistep branched pathway. In the photosynthetic bacterium Rhodopseudomonas capsulatus, the enzyme that catalyzes the first step is specifically inhibited by a combination of two end-product amino acids. Evidence is presented for operation of this kind of "concerted" feedback control as a regulatory device in growing cells.

Entities:  

Keywords:  ALCOHOL OXIDOREDUCTASES; AMINO ACID METABOLISM; ENZYMES; EXPERIMENTAL LAB STUDY; FEEDBACK; LYSINE; METHIONINE; PHOSPHOTRANSFERASES; RHODOPSEUDOMONAS; THREONINE

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Substances:

Year:  1965        PMID: 14281723     DOI: 10.1126/science.148.3675.1351

Source DB:  PubMed          Journal:  Science        ISSN: 0036-8075            Impact factor:   47.728


  6 in total

1.  A microbiologist's odyssey: Bacterial viruses to photosynthetic bacteria.

Authors:  H Gest
Journal:  Photosynth Res       Date:  1994-05       Impact factor: 3.573

2.  Regulation of biosynthesis of aspartate family amino acids in the photosynthetic bacterium Rhodopseudomonas palustris.

Authors:  H Yen; H Gest
Journal:  Arch Microbiol       Date:  1974       Impact factor: 2.552

3.  Regulation of homoserine biosynthesis by L-cysteine, a terminal metabolite of a linked pathway.

Authors:  P Datta
Journal:  Proc Natl Acad Sci U S A       Date:  1967-08       Impact factor: 11.205

4.  Synergistic effects of metabolically related amino acids on the growth of a multicellular plant.

Authors:  V L Dunham; J K Bryan
Journal:  Plant Physiol       Date:  1969-11       Impact factor: 8.340

5.  Concerted feedback inhibition of the aspartokinase of Rhodospirillum tenue by threonine and methionine: a novel pattern.

Authors:  M Robert-Gero; L Le Borgne; G N Cohen
Journal:  J Bacteriol       Date:  1972-10       Impact factor: 3.490

6.  Synergistic effects of metabolically related amino acids on the growth of a multicellular plant. II. Studies of 14C-amino acid incorporation.

Authors:  V L Dunham; J K Bryan
Journal:  Plant Physiol       Date:  1971-01       Impact factor: 8.340

  6 in total

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