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TRANSFER OF PYRIMIDINE DIMERS DURING BACTERIAL CONJUGATION
Author(s) -
Riazuddin S.,
Muhammed Amir
Publication year - 1974
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1974.tb06493.x
Subject(s) - pyrimidine dimer , escherichia coli , bacterial conjugation , irradiation , pyrimidine , ultraviolet , dna , photochemistry , ultraviolet radiation , bacteria , ultraviolet light , photolyase , biology , biophysics , chemistry , genetics , radiochemistry , dna repair , optics , physics , gene , nuclear physics
When male strains of Escherichia coli are irradiated with 254 nm ultraviolet (UV) light and mated with suitable females, DNA is transferred at almost the normal frequency (Howard‐Flanders et al. , 1968). Cole (1971) observed that an episome damaged by UV irradiation of the male parent could be transferred to a recipient and restored to activity by administering photoreactivating light. He therefore deduced that UV lesions are transferred to the recipients during bacterial conjugation. The object of this Research Note is to report experiments providing direct evidence of the transfer of pyrimidine dimers ‐the main lesions of UV irradiation.