Effect of exogenous nucleotides on growth and photopigment synthesis in Rhodopseudomonas capsulata

Emilio Montesinos, Jorge Barbé, Ricardo Guerrero, Jorge Mas

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Adenine, cytidine and guanosine nucleotides were supplied to cultures of Rhodopseudomonas capsulata under aerobic heterotrophic and phototrophic growth conditions. Aerobic growth is not affected by exogenous nucleotides (up to 10 mM) whereas phototrophic growth is strongly inhibited by adenine but not by guanosine or cytidine nucleotides. During phototrophic growth there is an inverse relationship between the concentration of exogenous adenine nucleotides and photopigment synthesis. There are no statistically significant differences between the inhibitory effect of AMP, ADP and ATP on the growth rate and bacteriochlorophyll synthesis since adenine nucleotides are incorporated into the cell as AMP by means of the phosphoribosyl transferase system. © 1983.
Original languageEnglish
Pages (from-to)196-200
JournalFEBS Letters
Volume154
DOIs
Publication statusPublished - 5 Apr 1983

Keywords

  • Bacteriochlorophyll synthesis
  • Exogenous nucleotide
  • Inhibition
  • Phototrophic bacteria

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