Table 1.

Spike glycoprotein cleavage recognition sites of Thai IBV isolates

IBV isolates	Group of isolate	Years of isolation	Cleavage sites	Accession number
THA40151	I	2008	Arg–Arg–His–Arg–Arg	GQ503612
THA50151	I	2008	Arg–Arg–His–Arg–Arg	GQ503613
THA60151	I	2008	Arg–Arg–His–Arg–Arg	GQ503614
THA80151	II	2008	Arg–Arg–His–Arg–Arg	GQ503616
THA90151	I	2008	Arg–Arg–His–Arg–Arg	GQ503617
THA171051	II	2008	Arg–Arg–His–Arg–Arg	GQ885126
THA211051	II	2008	Arg–Arg–His–Arg–Arg	GQ885128
THA241251	III	2008	Arg–Arg–Phe–Arg–Arg	GQ885131
THA260152	II	2009	Arg–Arg–His–Arg–Arg	GQ885133
THA280252	III	2009	Arg–Arg–Phe–Arg–Arg	GQ885134
THA290252	III	2009	Arg–Arg–Phe–Arg–Arg	GQ885135
THA310252	II	2009	Arg–Arg–His–Arg–Arg	GQ885137
THA320352	III	2009	Arg–Arg–Phe–Arg–Arg	GQ885138
THA351052	II	2009	Arg–Arg–His–Arg–Arg	GU111581
THA361052	II	2009	Arg–Arg–His–Arg–Arg	GU111582

Arg arginine, Phe phenylalanine, His histidine