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Structural view of resistance loci of SCH 900518 identified from replicon studies. The structure of SCH 900518 is presented as a stick model. Side chains of key residues are shown by using CPK models on the Connolly surface of the NS3 protease. The colors of the residues are defined as follows: red, active-site Ser139; magenta, Ala156; yellow, Thr54.
