TABLE 1.

Comparison between the vanA_bc and vanA gene clusters

B. circulans gene or sequence	Length (bp)	% Nucleotide identity	% Amino acid identity
IRL-ORFa	195	33
ORFb	534	54	28
ORF-vanRc	737	53
vanR	696	91	89
vanS	1,140	93	92
vanS-vanH	213	89
vanH	969	91	89
vanA	1,032	94	95
vanA-vanX	5	100
vanX	609	95	94
vanX-vanY	434	73
vanY	894	93	89
vanY-vanZ	154	76
vanZ	486	91	87
vanZ-IRRd	138	44

^aThe nucleotide sequence was matched with the left terminal IR (IR_L)-ORF1 intervening sequence of Tn1546. 

^bThe nucleotide and amino acid sequences were matched with ORF2 of Tn1546. 

^cThe nucleotide identity was calculated by matching a 211-bp region upstream from vanR_bc with ORF2-vanR intergenic sequence of Tn1546. 

^dThe nucleotide sequence was matched with vanZ-IR_R intervening sequence of Tn1546.