PHOTOREVERSIBILITY OF INDUCED MUTATIONS IN A NONPHOTOREACTIVABLE STRAIN OF ESCHERICHIA COLI
- 1 December 1963
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 50 (6) , 1055-1059
- https://doi.org/10.1073/pnas.50.6.1055
Abstract
A radiation-resistant derivative (strain H/r) of the nonphotoreactivable mutant strain isolated by Harm was found to be incapable of photoreversing UV-induced mutations to streptonycin resistance, as well as UV killing. Photoreversibility of UV-induced mutations to prototrophy, however, was found to be essentially normal in an agrinine-requiringsubstrain of H/r (H/r30). It was concluded that photoreversal of UV -induced mutations to prototrophy does not require the "photoreactiv-ating enzyme.".Keywords
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