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Photoreactivation in Escherichia coli phr-1 mutants

Technical Report ·
OSTI ID:6213348
;
Photoreactivation (PR) has been observed in E. coli phr-1 mutants by several investigators, contradicting the consensus that these strains are completely PR deficient. Several theories have been advanced regarding the nature of this photorepair, including the possible existence of a second photolyase enzyme. Our studies confirm the finding that PR occurs in phr-1 mutants and in light of recent observations on the nature of the 6-4 photoproduct, support the theory that photolysis of this lesion leads to the increased survival we have witnessed. Results are briefly discussed. 13 refs., 1 fig., 1 tab.
Research Organization:
Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
6213348
Report Number(s):
ANL/PPRNT-89-108; ON: DE89008438
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
550700* -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
BACTERIA
CHEMICAL REACTIONS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ENZYME ACTIVITY
ESCHERICHIA COLI
MICROORGANISMS
MUTANTS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
ULTRAVIOLET RADIATION