Schematic view of SGI1-L and its specific features encountered in Morganella morganii strain LIM90. The gray arrow corresponds to chromosomal gene trmE into which SGI1 is integrated into the last 18 bp. DR-L and DR-R are the 18-bp left and right direct repeats, respectively, bracketing SGI1. The insertion points of complex class 1 integron InSGI1-L between the res gene and ORF S044 of the SGI1 backbone and the 5-bp target site duplication are indicated. IRi and IRt are 25-bp imperfect inverted repeats defining the left and right end of the complex class 1 integron. Black arrows correspond to SGI1 antibiotic resistance genes. IS elements are indicated by boxes containing black hatched arrows representing the transposase genes. Base pair coordinates are from the complete SGI1-L sequence of M. morganii strain LIM90 (ENA accession no. LT630458).
↵a SNP positions in the ORF of the TA system sgiAT are given according to ENA accession no. LT630458.
↵b The SGI1-PmMAT variant harbored the deletion created by ISVch4 and extending from within ORF S005 to within ORF S009 but without the presence of ISVch4 (18).
↵c The original SGI1 sequence (AF261825) showed 6 other specific SNP positions.
↵d The SGI1-F variant showed 5 other specific SNP positions.
↵e The SGI2 variant harbored 93 additional SNP positions and the transpositional insertion of the complex class 1 integron structure at a position different that in from all other variants (7, 8, 11, 14).