Respiratory control in Micrococcus lysodeikticus

Mel Rosenberg*, Ilan Friedberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The respiration rate of Pi-deprived cells of Micrococcus lysodeikticus is markedly increased by Pi, and returns to the original level following Pi consumption. The stimulation of the respiration was found to be specific for Pi and arsenate. Although succinate and valinomycin enchanced the respiration of both Pi-grown and Pi-deprived cells, only the latter could be further stimulated by Pi. The effect of Pi on the respiration rate was found to be concentration dependent. The control of respiration by Pi is due to its rapid uptake and its subsequent polymerization to polyphosphate via ATP. Both of these processes are coupled to proton influx into the cell, and thus stimulate the proton efflux and the respiration rate.

Original languageEnglish
Pages (from-to)61-68
Number of pages8
JournalJournal of Bioenergetics and Biomembranes
Issue number1
StatePublished - Feb 1984


  • Micrococcus lysodeikticus
  • Respiratory control
  • phosphate transport
  • polyphosphate
  • protonmotive force


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