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| Slock J, Stahly DP, Han CY, Six EW, Crawford IP (1990) An apparent Bacillus subtilis folic acid biosynthetic operon containing pab, an amphibolic trpG gene, a third gene required for synthesis of para-aminobenzoic acid, and the dihydropteroate synthase gene. J Bacteriol 172:7211-26.[PMID:2123867] |
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