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J. Bacteriol., 01 1995, 271-274, Vol 177, No. 1
J Martinussen, P Glaser, PS Andersen and HH Saxild
Uracil phosphoribosyltransferase (UPRTase) catalyzes the key reaction in
the salvage of uracil in many microorganisms. Surprisingly, two genes
encoding UPRTase activity were cloned from Bacillus subtilis by
complementation of an Escherichia coli mutant. The genes were sequenced,
and the putative amino acid sequences were deduced. One gene showed a high
level of homology to UPRTases from other organisms, whereas the other gene
with a low level of homology to other UPRTases turned out to be the pyrR
gene--the repressor of the pyr operon. The role of these genes in uracil
metabolism was established by an analysis of the phenotypes of upp and pyrR
mutants.
Copyright © 1995, American Society for Microbiology
Two genes encoding uracil phosphoribosyltransferase are present in Bacillus subtilis
Center for Lactic Acid Bacteria, Technical University of Denmark, Lyngby.
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