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Rifampicin sensitivity of residual RNA synthesis in Escherichia coli cells exposed to ultraviolet radiation and combined ultraviolet and. gamma. radiations

Journal Article:

Abstract

UV-irradiation prevents rifampicin inhibition of the initiation of RNA synthesis by E.coli cells, but such rifampicin insensitivity is not exhibited by the residual RNA synthesis in ..gamma..-irradiated cells. Studies of the rate of (/sup 3/H)-uridine incorporation by E.coli cells at various times of incubation have been used to show that when ..gamma.. irradiation was given either before or after uv-irradiation of cells, the observed rifampicin insensitivity of residual RNA synthesis in the uv-irradiated cells was obliterated. RNA synthesis in cells subjected to combined exposures of uv- and ..gamma..-radiations was lowered to a lesser extent than that in the cells exposed to uv-irradiation alone. Possible mechanisms are discussed.
Authors:
Prakash, R K; Netrawali, M S; Pradhan, D S [1] 
  1. Bhabha Atomic Research Centre, Bombay (India). Biochemistry and Food Technology Div.
Publication Date:
Sep 01, 1976
Product Type:
Journal Article
Reference Number:
AIX-08-283579; EDB-77-038680
Resource Relation:
Journal Name: Photochem. Photobiol.; (United Kingdom); Journal Volume: 24:3
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; GAMMA RADIATION; RADIOSENSITIVITY EFFECTS; RNA; BIOSYNTHESIS; ANTIBIOTICS; BIOCHEMICAL REACTION KINETICS; CHEMICAL RADIATION EFFECTS; COMPARATIVE EVALUATIONS; DNA; ESCHERICHIA COLI; INHIBITION; RESPONSE MODIFYING FACTORS; SENSITIVITY; SYNERGISM; ULTRAVIOLET RADIATION; BACTERIA; CHEMISTRY; DRUGS; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; KINETICS; MICROORGANISMS; NUCLEIC ACIDS; ORGANIC COMPOUNDS; RADIATION CHEMISTRY; RADIATION EFFECTS; RADIATIONS; REACTION KINETICS; SYNTHESIS; 560131* - Radiation Effects on Microorganisms- Basic Studies- (-1987)
OSTI ID:
7130965
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PHCBA
Submitting Site:
INIS
Size:
Pages: 295-297
Announcement Date:

Journal Article:

Citation Formats

Prakash, R K, Netrawali, M S, and Pradhan, D S. Rifampicin sensitivity of residual RNA synthesis in Escherichia coli cells exposed to ultraviolet radiation and combined ultraviolet and. gamma. radiations. United Kingdom: N. p., 1976. Web.
Prakash, R K, Netrawali, M S, & Pradhan, D S. Rifampicin sensitivity of residual RNA synthesis in Escherichia coli cells exposed to ultraviolet radiation and combined ultraviolet and. gamma. radiations. United Kingdom.
Prakash, R K, Netrawali, M S, and Pradhan, D S. 1976. "Rifampicin sensitivity of residual RNA synthesis in Escherichia coli cells exposed to ultraviolet radiation and combined ultraviolet and. gamma. radiations." United Kingdom.
@misc{etde_7130965,
title = {Rifampicin sensitivity of residual RNA synthesis in Escherichia coli cells exposed to ultraviolet radiation and combined ultraviolet and. gamma. radiations}
author = {Prakash, R K, Netrawali, M S, and Pradhan, D S}
abstractNote = {UV-irradiation prevents rifampicin inhibition of the initiation of RNA synthesis by E.coli cells, but such rifampicin insensitivity is not exhibited by the residual RNA synthesis in ..gamma..-irradiated cells. Studies of the rate of (/sup 3/H)-uridine incorporation by E.coli cells at various times of incubation have been used to show that when ..gamma.. irradiation was given either before or after uv-irradiation of cells, the observed rifampicin insensitivity of residual RNA synthesis in the uv-irradiated cells was obliterated. RNA synthesis in cells subjected to combined exposures of uv- and ..gamma..-radiations was lowered to a lesser extent than that in the cells exposed to uv-irradiation alone. Possible mechanisms are discussed.}
journal = {Photochem. Photobiol.; (United Kingdom)}
volume = {24:3}
journal type = {AC}
place = {United Kingdom}
year = {1976}
month = {Sep}
}