TABLE 2.

Polymorphic sites for 72 serotype b strains

ST	No. of isolates	A. actinomycetemcomitans type	Nucleotides in gene fragments sequenced
			adk position 1269464a	atpG		frdB		recA		hbpA-1		hbpA-2				tbpA
				Position 998226	Position 998430	Position 551989	Position 552223	Position 1045096	Position 1045144	Position 526897	Position 527177	Position 525077	Position 525152	Position 525187	Position 525285	Position 1500566	Position 1500848b	Position 1500872	Position 1500879
1	30	JP2	T	C	G	A	G	G	C	G	C	T	C	C	G	C	A	A	A
2	2	JP2	T	C	G	A	G	G	C	G	C	T	C	C	G	C	A	G	A
3	1	JP2	T	C	G	A	G	G	C	G	C	T	C	C	G	A	A	A	A
4	3	JP2	T	C	G	A	A	G	C	G	C	T	C	C	G	C	A	A	A
5	1	JP2	T	C	G	A	G	G	C	G	C	T	G	C	G	C	A	A	A
6	1	JP2	T	C	G	A	G	G	C	G	T	T	C	C	A	C	A	A	A
7	1	JP2	T	C	C	A	G	G	C	T	C	T	C	C	A	C	A	A	A
8	20	JP2	T	C	G	A	G	G	C	G	C	T	C	C	A	C	A	A	A
9	3	JP2	T	T	G	A	G	G	C	G	C	T	C	C	A	C	A	A	A
10	2	JP2	C	C	G	A	G	G	C	G	C	T	C	C	A	C	A	A	A
11	2	JP2	T	C	G	A	G	G	A	G	C	T	C	C	A	C	A	A	A
12	1	Non-JP2	T	C	G	A	G	G	C	G	C	G	C	C	G	C	A	A	A
13	1	Non-JP2	T	C	G	A	G	T	C	G	C	G	C	C	G	C	—	A	A
14	1	Non-JP2	T	C	G	A	G	G	C	G	C	G	C	A	G	C	A	A	A
15	1	Non-JP2	T	C	G	G	G	G	C	G	C	G	C	C	G	C	—	A	G
16	2	Non-JP2	T	C	G	A	G	G	C	G	C	G	C	C	G	C	—	A	A

^aPosition in the HK1651 genome (http://www.genome.ou.edu/act.html).

^b—, deletion of a single nucleotide at this position.