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- W2003092871 abstract "Pyrimidine biosynthesis was active in Pseudomonas citronellolis ATCC 13674 and appeared to be regulated by pyrimidines. When wild-type cells were grown on succinate in the presence of uracil, the de novo enzyme activities were depressed while only four enzyme activities were depressed in the glucose-grown cells. On either carbon source, orotic acid-grown cells had diminished aspartate transcarbamoylase, dihydroorotase or OMP decarboxylase activity. Pyrimidine limitation of glucose-grown pyrimidine auxotrophic cells resulted in de novo enzyme activities, except for transcarbamoyolase activity, that were elevated by more than 5-fold compared to their activities in uracil-grown cells. Since pyrimidine limitation of succinate-grown mutant cells produced less enzyme derepression, catabolite repression appeared to be a factor. At the level of enzyme activity, aspartate transcarbamoylase activity in P. citronellolis was strongly inhibited by all effectors tested. Compared to the regulation of pyrimidine biosynthesis in taxonomically-related species, pyrimidine biosynthesis in P. citronellolis appeared more highly regulated.Key words: pyrimidine biosynthesis, regulation, Pseudomonas citronellolis, auxotroph, aspartate transcarbamoylase, inhibition." @default.
- W2003092871 created "2016-06-24" @default.
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- W2003092871 date "2004-06-01" @default.
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- W2003092871 title "Pyrimidine nucleotide synthesis inPseudomonascitronellolis" @default.
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- W2003092871 doi "https://doi.org/10.1139/w04-028" @default.
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