Control by cesium and intermediates of the citric acid cycle of extracellular ribonuclease and other enzymes involved in the assimilation of nitrogen. Academic Article uri icon

Overview

abstract

  • Synthesis of extracellular ribonuclease is induced in cell cultures of Ustilago sphaerogena that are starved for nitrogen and exposed to the gratuitous inducer, 6-mercaptopurine. Cesium, ammonium, or alkylammonium ion represses ribonuclease induction. Addition of citric-acid cycle intermediates to cesium ionrepressed cultures partially restores the rate of ribonuclease synthesis to the induced level. Enzymes involved in assimilation of nitrogen from different sources are also repressed by cesium ion and derepressed by intermediates from the citric acid cycle.

publication date

  • September 1, 1971

Research

keywords

  • Cesium
  • Citric Acid Cycle
  • Fungi
  • Nitrogen
  • Ribonucleases

Identity

PubMed Central ID

  • PMC389393

Scopus Document Identifier

  • 0015117266

Digital Object Identifier (DOI)

  • 10.1073/pnas.68.9.2241

PubMed ID

  • 5289382

Additional Document Info

volume

  • 68

issue

  • 9