Distribution of the 198 detected group II intron copies among the 18 Enterobacteriales genera/complexes.

*: Two orthologous copies in the Escherichia/Shigella complex are full-length in some strains and fragmented in others; they are counted only as distinct full-length copies.

*: 埃希氏菌/志贺氏菌复合群中的两个直系同源拷贝，在部分菌株中为全长序列，在其余菌株中则发生片段化；仅将独立的全长拷贝计入统计。