AN AFTEREFFECT OF IONIZING RADIATION ON A MUTANT OF ESCHERICHIA COLI
A study- is being made of the effect of ionizing radiation on a mutant of Escherichia coli Monod that requires hemin for the synthesis of porphyrin- containing emymes. If growth occurs in the absence of hemin and the cells are consequently catalase and cytochrome-negative, a postirradiation inactivation is observed. This aftereffect is caused by the low concentration of hydrogen peroxide formed by irradiation in the medium surrounding the cells that survive the immediate effects of irradiation; it is not observed in unirradiated cells. This suggests that irradiation sensitizes these cells to hydrogen peroxide. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-001084
- OSTI ID:
- 4300796
- Journal Information:
- Radiation Research, Journal Name: Radiation Research Vol. Vol: 9
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Catalase, Hydrogen Peroxide, and Ionizing Radiation
Cytoplasmic membrane fraction that promotes septation in an Escherichia coli lon mutant
Promotion of septation in irradiated Escherichia coli by a cytoplasmic membrane preparation
Journal Article
·
Mon Dec 31 23:00:00 EST 1962
· Radiation Research, Supplement
·
OSTI ID:4704662
Cytoplasmic membrane fraction that promotes septation in an Escherichia coli lon mutant
Journal Article
·
Sat Aug 01 00:00:00 EDT 1981
· J. Bacteriol.; (United States)
·
OSTI ID:6227150
Promotion of septation in irradiated Escherichia coli by a cytoplasmic membrane preparation
Journal Article
·
Wed May 01 00:00:00 EDT 1985
· Radiat. Res.; (United States)
·
OSTI ID:5355555
Related Subjects
AGE
ANIMAL CELLS
BACTERIA
BARIUM
BARIUM HYDROXIDES
BIOCHEMISTRY
BIOLOGY AND MEDICINE
CALCIUM COMPOUNDS
CARBON 14
CARBON DIOXIDE
CARBOXYLIC ACIDS
CATALASE
CHEMICAL REACTIONS
CYTOCHROMES
DECARBOXYLATION
ENZYMES
ESCHERICHIA COLI
HEMIN
HYDROGEN PEROXIDES
IONIZATION
METABOLISM
NITROGEN
ORGANIC ACIDS
PIGMENTS
PORPHYRINS
PROTEINS
QUANTITY RATIO
RADIATION EFFECTS
RADIOSENSITIVITY
RATS
SALTS
SURVIVAL TIME
TRACER TECHNIQUES
ANIMAL CELLS
BACTERIA
BARIUM
BARIUM HYDROXIDES
BIOCHEMISTRY
BIOLOGY AND MEDICINE
CALCIUM COMPOUNDS
CARBON 14
CARBON DIOXIDE
CARBOXYLIC ACIDS
CATALASE
CHEMICAL REACTIONS
CYTOCHROMES
DECARBOXYLATION
ENZYMES
ESCHERICHIA COLI
HEMIN
HYDROGEN PEROXIDES
IONIZATION
METABOLISM
NITROGEN
ORGANIC ACIDS
PIGMENTS
PORPHYRINS
PROTEINS
QUANTITY RATIO
RADIATION EFFECTS
RADIOSENSITIVITY
RATS
SALTS
SURVIVAL TIME
TRACER TECHNIQUES