Isolation and characterization of an Escherichia coli B mutant strain defective in uracil catabolism.


A reductive pathway of uracil catabolism was shown to be functioning in Escherichia coli B ATCC 11303 by virtue of thin-layer chromatographic and enzyme analyses. A mutant defective in uracil catabolism was isolated from this strain and subsequently characterized. The three enzyme activities associated with the reductive pathway of pyrimidine catabolism… (More)


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