McLaughlin R E, Ferretti J J
Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City 73190, USA.
FEMS Microbiol Lett. 1996 Jul 1;140(2-3):261-4. doi: 10.1016/0378-1097(96)00191-7.
The multiple-sugar metabolism (msm) locus of Streptococcus mutans constitutes a non-PTS sugar uptake system responsible for the transport and utilization of raffinose, melibiose and isomaltotrioses. While previous studies have used polar mutations to suggest that these genes are co-transcribed, there has not been evidence to support this. In this report we present direct evidence that the msm genes can be transcribed as a single operon.
变形链球菌的多糖代谢（msm）位点构成了一个非磷酸转移酶系统（PTS）的糖摄取系统，负责棉子糖、蜜二糖和异麦芽三糖的转运和利用。虽然先前的研究利用极性突变表明这些基因是共转录的，但尚无证据支持这一点。在本报告中，我们提供了直接证据，证明msm基因可以作为一个单一的操纵子进行转录。
