THE IN VIVO ASSOCIATION OF MANGANESE WITH THE CHROMOSOME OF MICROCOCCUS RADIODURANS

P. J. Lebowitz, Lee Schwartzberg, A. K. Bruce

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Abstract—Extremely high levels of paramagnetic manganese (Mn2+) which quench phosphorescent reactions have been found to inhibit the formation of thymine‐containing dimers in M. radiodurans. Lowering the concentration of Mn2+ in the culture medium resulted in a lower intracellular concentration of Mn2+, an increase in the UV‐sensitivity of this bacterium, and a larger photochemical yield of thymine‐containing dimers. High levels of paramagnetic Mn2+ were not found in other test organisms which are more sensitive to UV‐irradiation. One interpretation of our data is that in Micrococcus radiodurans Mn2+ may bind to the chromosome and thereby reduce the photochemical yield of thymine‐containing dimers.

Original languageEnglish (US)
Pages (from-to)45-50
Number of pages6
JournalPhotochemistry and Photobiology
Volume23
Issue number1
DOIs
StatePublished - Jan 1 1976

Fingerprint

Micrococcus
chromosomes
Chromosomes
Manganese
Dimers
Culture Media
manganese
dimers
Bacteria
culture media
organisms
bacteria
low concentrations

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physical and Theoretical Chemistry

Cite this

THE IN VIVO ASSOCIATION OF MANGANESE WITH THE CHROMOSOME OF MICROCOCCUS RADIODURANS. / Lebowitz, P. J.; Schwartzberg, Lee; Bruce, A. K.

In: Photochemistry and Photobiology, Vol. 23, No. 1, 01.01.1976, p. 45-50.

Research output: Contribution to journalArticle

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