Table 2.

Assignation of different phylogenetic groups

Gene	chuA	yjaA	TspE4.C2
Group
Group A	NP*	V**	NP
Group B1	NP	V	P***
Group B2	P	P	V
Group D	P	NP	V

^*Not present (group does not possess gene),

^**Variable (possession of gene is variable),

^*** Present (group possesses gene)