Table 2.
IBV reference strains published in GenBank
| IBV strain (geographic origin) | Year of isolation | Serotype or pathogenesis | S1 protein cleavage recognition motifs | Accession number |
|---|---|---|---|---|
| Ma5 | Vaccine strain | Mass | RRFRR | AY561713 |
| H120 | Vaccine strain | Mass | RRFRR | EU822341 |
| H52 | Vaccine strain | Mass | RRFRR | AF352315 |
| W93(China) | Vaccine strain | Connecticut | RRFRR | AY846750 |
| M41(USA) | 1956 | Mass | RRFRR | DQ834384 |
| Beaudette(USA) | 1937 | Mass | RRFRR | M95196 |
| Ark99(USA) | 1973 | Arkansas | HRSRR | M99482 |
| Gray(USA) | 1962 | Gray | RRSRR | L14069 |
| Holte(USA) | 1962 | Holte | RRSRR | L18988 |
| 7/93(UK) | 1993 | 793/B | RRSRR | Z83979 |
| 4/91(UK) | 1991 | 793/B | RRSRR | AF093794 |
| TW2575/98 | 1998 | TW I | RRFRR | DQ646405 |
| 3468/07 | 2007 | TW I | RRSRR | EU822336 |
| 3071/03 | 2003 | TW I | RRFRR | AY606319 |
| 3263/04 | 2004 | TW II | RRFRR | EU822338 |
| T07/02 | 2007 | TW II | RRFRR | AY606322 |
| LX4(China) | 1999 | Nephropathogenic | HRRRR | AY338732 |
| QXIBV(China) | 1997 | Proventriculitis | HRRRR | AF193423 |
| A2(China) | 1996 | Nephropathogenic | HRRRR | AY043312 |
| CQ04-1(China) | 2004 | Nephropathogenic | RRFRR | GQ265952 |
| DY05(China) | 2005 | Nephropathogenic | HRRRR | GQ265928 |
| HN08(China) | 2008 | Nephropathogenic | RRFRR | GQ265940 |
| IBVSX4(China) | 2009 | Respiratory | RRFRR | FJ793939 |
| LZ05(China) | 2005 | Nephropathogenic | RRFRR | GQ265943 |
| LZ07(China) | 2007 | Respiratory | RRFRR | GQ265944 |
| SAIBK(China) | 2007 | Nephropathogenic | RRFRR | DQ288927 |
| TC07-2(China) | 2007 | Respiratory | HRRKR | GQ265948 |
| TA03(China) | 2003 | Respiratory | RRSRR | AY837465 |
| CK/CH/GD/KP10(China) | 2010 | Respiratory | HRHKR | HQ018919 |
| CK/CH/GD/LZ09(China) | 2009 | Nephropathogenic | HRRRR | HQ018896 |
| CK/CH/GD/NC10(China) | 2010 | Nephropathogenic | HRHKR | HQ018903 |
| CK/CH/GX/NN09(China) | 2009 | Nephropathogenic | RRLRR | HQ018900 |
| CK/CH/LJS/08II(China) | 2008 | Nephropathogenic | HRRRR | GQ258321 |
| CK/CH/LSD/08-12(China) | 2008 | Nephropathogenic | HRRRR | GQ258327 |
| CK/CH/SC/ZJ10-1(China) | 2010 | Nephropathogenic | RRFRR | HQ018918 |
| CK/CH/GD/HY09(China) | 2009 | Respiratory | RRFRR | HQ018887 |
| CK/CH/FJ/PT10(China) | 2010 | Nephropathogenic | RRFRR | HQ018898 |
| CK/CH/JX/JA09-1(China) | 2009 | Nephropathogenic | RRSKR | HQ018890 |
| CK/CH/HuN/NX09(China) | 2009 | Respiratory | RRFRR | HQ018899 |
| CK/CH/GX/YL09-2(China) | 2009 | Nephropathogenic | HRRRR | HQ018905 |
HRRRR His-Arg-Arg-Arg-Arg (8 times), RRFRR Arg-Arg-Phe-Arg-Arg (20 times), RRLRR Arg-Arg-Leu-Arg-Arg (1 time), HRRKR His-Arg-Arg-Lys-Arg (1 time), RRSRR Arg-Arg-Ser-Arg-Arg (6 times), HRSRR His-Arg-Ser-Arg-Arg (1 time), HRHKR His-Arg-His-Lys-Arg (2 time), RRSKR Arg-Arg-Ser-Lys-Arg (1 time)