Kemper J
J Bacteriol. 1974 Jan;117(1):94-9. doi: 10.1128/jb.117.1.94-99.1974.
The gene order and orientation in the leu-pyrA region of the Salmonella typhimurium linkage map was established by phage P22-mediated transductions. The gene order, in counterclockwise orientation, is leuO-leuA-leuB-leuC-leuD-ara-fol-pyrA. The fol locus is co-transducible with either the ara and leu loci or the pyrA locus, whereas no co-transduction for the ara and pyrA loci can be found.
鼠伤寒沙门氏菌连锁图谱中亮氨酸 - 嘧啶A(leu - pyrA)区域的基因顺序和方向是通过噬菌体P22介导的转导确定的。基因顺序按逆时针方向为:leuO - leuA - leuB - leuC - leuD - ara - fol - pyrA。叶酸(fol)位点与ara和leu位点或pyrA位点共转导,而ara和pyrA位点之间未发现共转导现象。