Mar 1, 1989

Organic nitrogen metabolism of phototrophic bacteria

Antonie van Leeuwenhoek
J H Klemme

Abstract

Recent reviews dealing with phototrophic bacteria are concerned with bioenergetics, nitrogen fixation and hydrogen metabolism, synthesis of the photosynthetic apparatus and phylogeny/taxonomy. The organic N-metabolism of these phylogenetically diverse bacteria has last been reviewed in 1978. However, amino acid utilization and biosynthesis, ammonia assimilation, purine and pyrimidine metabolism and biosynthesis of delta-aminolevulinic acid as precursor of bacteriochlorophylls and hemes are topics of vital importance. This review focuses on utilization of amino acids as N- and C/N-sources, the pathways of purine and pyrimidine degradation, novel aspects of amino acid biosynthesis (with emphasis on branched-chain amino acids and delta-aminolevulinic acid) and some aspects of ammonia assimilation and glutamate synthesis by purple bacteria, green sulfur bacteria and Chloroflexus aurantiacus.

Mentioned in this Paper

Metabolic Process, Cellular
Biochemical Pathway
Nitrogen Metabolism Pathway
Nitrogen Fixation
Glutamate Biosynthetic Process
Carmol
Amino Acids, I.V. solution additive
Vitreous Carbon
Chloroflexus aurantiacus
Pyrimidine Metabolism Pathway

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