Table 2.

sequence alignment of bcs A-B in four bcs operons of G. xylinus CGMCC 2955.

	bcs I A-B	bcs II A-B	bcs III A-B	bcs IV A-B
bcs I A-B	100	57.31	53.36	56.79
bcs II A-B	57.31	100	56.99	67.87
bcs III A-B	53.36	56.99	100	55.87
bcs IV A-B	56.79	67.87	55.87	100