Secondary Structures for Family C30
| C30.002: avian infectious bronchitis coronavirus 3C-like peptidase 2Q6F |
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| C30.003: human coronavirus 229E main peptidase 1P9S_A |
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| C30.004: porcine transmissible gastroenteritis virus-type main peptidase 1LVO_A |
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| C30.005: SARS coronavirus picornain 3C-like peptidase 1UJ1_A |
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