Table 2 CagA primary structures commonly observed in India and in Western countries and the new typing system.
CagA primary structures | Types described by Yamaokaet al.(1998) | Types described by Higashiet al.(2002) | New typing system (this study) | Examples in this study |
|---|---|---|---|---|
S1Y1V1Y2I1I2I3Y3W1I2T1 | Type A | A-B-C | Type 1 | PCR29i |
S1Y1V1Y2I1I2I3Y3W1I2I3Y4W1I2T1 | Type C | A-B-C-C | Type 2 | San53 |
S1Y1V1Y2I1I2I3Y3W1I2I3Y4W1I2I3Y5W1I2T1 | Type ? | A-B-C-C-C | Type 3 | San77 |
S1Y1I1I2I3Y3W1I2I3Y4W1I2T1 | Type D | A-C-C | Type 4 | I-230 |
S1Y1I1I2I3Y3W1I2T1 | Type ? | A-C (?) | Type 5 | I-27i |
S1Y1W1I2T1 | Type ? | A (?) | Type 6 | PCR24 |
S1Y1V1Y2I1I2T1 | Type ? | A (?) | Type 7 | PCR98 |