ID 3.4.22.69 DE SARS coronavirus main proteinase. AN 3C-like protease. AN 3cLpro. AN coronavirus 3C-like protease. AN SARS coronavirus main protease. AN SARS-CoV 3CLpro enzyme. AN severe acute respiratory syndrome coronavirus main protease. CA TSAVLQ-|-SGFRK-NH2 and SGVTFQ-|-GKFKK the two peptides corresponding to CA the two self-cleavage sites of the SARS 3C-like proteinase are the two CA most reactive peptide substrates. The enzyme exhibits a strong preference CA for substrates containing Gln at P1 position and Leu at P2 position. CC -!- SARS coronavirus main protease is the key enzyme in SARS coronavirus CC replicase polyprotein processing. CC -!- Belongs to peptidase family C30. DR P0C6X7, R1AB_SARS ; P0DTD1, R1AB_SARS2 ; P0C6F7, R1A_BC133 ; DR P0C6F5, R1A_BC279 ; P0C6F8, R1A_BCHK3 ; P0C6T4, R1A_BCHK4 ; DR P0C6T5, R1A_BCHK5 ; P0C6T6, R1A_BCHK9 ; P0C6T7, R1A_BCRP3 ; DR P0C6T8, R1A_CVBEN ; P0C6T9, R1A_CVBLU ; P0C6U0, R1A_CVBM ; DR P0C6U1, R1A_CVBQ ; P0C6U3, R1A_CVHN1 ; P0C6U4, R1A_CVHN2 ; DR P0C6U5, R1A_CVHN5 ; P0C6U7, R1A_CVHOC ; P0C6U9, R1A_CVM2 ; DR P0C6V0, R1A_CVMA5 ; P0C6V1, R1A_CVMJH ; K9N638, R1A_MERS1 ; DR P0C6U8, R1A_SARS ; P0DTC1, R1A_SARS2 ; //