REGULATION OF NEWLY EVOLVED ENZYMES II. THE EBG REPRESSOR

1 Faculty of Medicine, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 5S7
2 Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907

The ebg (evolved ß-galactosidase) regulatory locus has been mapped. The map order is argG–ebgA–ebgR–tolC–metC , and there is 1.6% recombination between ebgR and ebgA . Studies with ebgR-/ebgR+ merdiploids have shown that ebgR- is recessive, and it is concluded that the synthesis of ebg enzyme is under negative control.

Submitted on February 10, 1975
Revised on July 18, 1975




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