TABLE 3.

SeM gene sequence types of S. equi

Allele	No. of isolates (no. of strangles outbreaks)a	Amino acid at codon no.b:
		41	54	58	62	63	65	78	90	92	104	107	108	110	122	125	127	143
1	2 (2)c	Ser	Asn	Glu	Ser	Arg	Ala	Ala	Leu	Ser	Asn	Met	His	Ser	Arg	Ser	Ala	Ser
2	1 (1)	*	*	Asp	*	Gly	*	*	*	*	*	*	*	*	*	*	*	Arg
3	1 (1)	*	*	*	*	*	*	*	*	*	*	Val	*	*	*	*	*	*
4	6 (1)	*	*	*	*	*	*	*	Phe	*	*	*	Arg	*	Gly	*	*	*
5	1 (1)	Arg	*	Asp	Asp	*	*	Alaf	*	*	Asng	*	Arg	*	*	*	Thr	*
6	22 (9)d	*	*	*	*	*	*	*	Phe	*	*	*	Arg	*	*	*	*	*
7	4 (2)	*	*	*	*	*	*	*	Phe	*	*	*	*	*	*	*	*	*
8	1 (1)	*	*	Asp	*	*	*	*	*	Pro	*	*	*	*	*	*	*	*
9	6 (5)	*	*	Asp	Asp	*	*	*	*	*	Asng	*	*	*	*	*	Thr	*
10	5 (3)	*	*	Asp	Asp	*	*	*	*	*	*	*	*	*	*	*	Thr	*
11	1 (1)	*	*	Glue	*	Gly	*	*	*	*	*	*	*	*	*	*	*	Arg
12	1 (1)	*	Gly	*	*	*	Val	*	Phe	*	*	*	Arg	*	*	Asn	Ser	*
13	1 (1)	*	Ser	*	*	*	Val	*	Phe	*	*	*	*	Pro	*	Asn	Ser	*
14	1 (1)	*	Gly	*	*	*	Val	*	Phe	*	*	*	*	Pro	*	Asn	Ser	*
15	1 (1)	*	*	Glue	*	*	*	*	*	*	*	*	Gln	*	*	*	*	*

^aSome outbreaks contained multiple S. equi subtypes.

^bAmino acids differing from the majority are shown in boldface type. The asterisks indicate that the same codon is used as in allele 1.

^cDoes not include isolates of the Equilis StrepE vaccine.

^dDoes not include isolate 1610, which had a 6-amino-acid insertion into its MT6 sequence.

^eGlu is encoded by GAG in MT11 and MT15 and by GAA in other MTs with a Glu codon.

^fAla is encoded by GCT in MT5 and by GCC in other MTs with an Ala codon.

^gAsn is encoded by AAC in MT5 and MT9 and by AAT in other MTs with an Asn codon.