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Loss of characteristic radiation resistance by mutation of Micrococcus radiodurans

Journal Article:

Abstract

The exceptional radioresistance of M. radiodurans was lost by a mutation, and the isolated mutant, KH840, had almost the same radiosensitivity as E. coli K12 AB1157 or B/r. DNA-strand scissions in this mutant were rejoined partly during post-irradiation incubation. Reduced DNA polymerizing activity and extensive degradation of the product was observed in vitro in the crude extract from the sensitive strain. The lower repair capability is not accompanied by the reduced transformation frequency.
Authors:
Kitayama, S; Matusyama, A [1] 
  1. Institute of Physical and Chemical Research, Wako, Saitama (Japan)
Publication Date:
Sep 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-07-240093; EDB-77-032932
Resource Relation:
Journal Name: Mutat. Res.; (Netherlands); Journal Volume: 29:3
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; MICROCOCCUS RADIODURANS; RADIOSENSITIVITY; STRAND BREAKS; BIOLOGICAL REPAIR; CELL CULTURES; DNA; GAMMA RADIATION; IN VITRO; MUTANTS; NUCLEASES; POLYMERASES; SURVIVAL CURVES; BACTERIA; BIOLOGICAL RECOVERY; ELECTROMAGNETIC RADIATION; ENZYMES; IONIZING RADIATIONS; MICROCOCCUS; MICROORGANISMS; NUCLEIC ACIDS; ORGANIC COMPOUNDS; PHOSPHOTRANSFERASES; RADIATIONS; RECOVERY; REPAIR; TRANSFERASES; 560131* - Radiation Effects on Microorganisms- Basic Studies- (-1987)
OSTI ID:
7338249
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: MUREA
Submitting Site:
INIS
Size:
Pages: 327-332
Announcement Date:

Journal Article:

Citation Formats

Kitayama, S, and Matusyama, A. Loss of characteristic radiation resistance by mutation of Micrococcus radiodurans. Netherlands: N. p., 1975. Web.
Kitayama, S, & Matusyama, A. Loss of characteristic radiation resistance by mutation of Micrococcus radiodurans. Netherlands.
Kitayama, S, and Matusyama, A. 1975. "Loss of characteristic radiation resistance by mutation of Micrococcus radiodurans." Netherlands.
@misc{etde_7338249,
title = {Loss of characteristic radiation resistance by mutation of Micrococcus radiodurans}
author = {Kitayama, S, and Matusyama, A}
abstractNote = {The exceptional radioresistance of M. radiodurans was lost by a mutation, and the isolated mutant, KH840, had almost the same radiosensitivity as E. coli K12 AB1157 or B/r. DNA-strand scissions in this mutant were rejoined partly during post-irradiation incubation. Reduced DNA polymerizing activity and extensive degradation of the product was observed in vitro in the crude extract from the sensitive strain. The lower repair capability is not accompanied by the reduced transformation frequency.}
journal = {Mutat. Res.; (Netherlands)}
volume = {29:3}
journal type = {AC}
place = {Netherlands}
year = {1975}
month = {Sep}
}