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. 2003 Jan 15;31(2):743–749. doi: 10.1093/nar/gkg135

Figure 3.

Figure 3

Elements presumably involved in regulation of Esp1396I RM system genes. (A) Predicted secondary structure of polycistronic mRNA encoding esp1396IC and esp1396IR gene junction. Shine–Dalgarno region and translation start codon for esp1396IR gene are indicated by the gray boxes, stop codon for esp1396IC is indicated by the black box. (B) Putative operator sequences for C.Esp1396I protein. C-box sequences identified upstream esp1396IC and esp1396IM genes as well as those found upstream regulatory and Mtase genes in SmaI and NmeSI RM systems are aligned. Consensus sequence for C-box and for inverted repeats as proposed in (24) is given above. Regions of inverted repeats in the other C-boxes are boxed. Nucleotides matching those indicated as consensus are shaded. Only one inverted repeat found upstream the esp1396IM gene is bolded.