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The proposed model of the interaction between inhibitor 3 and the Tyr530 of hPIV-1 HN. Representation of a hPIV-1 homology model (based on hPIV-3 co-crystal structure in complex with 3, PDB ID: 4XJR) [13] in complex with inhibitor 3 (yellow sticks). Side chains of the tri-arginyl cluster (R194, R426 and R502) and the key catalytic amino acid Tyr530 are shown in blue sticks.
