Fig. 3: Amino acid binding pocket of sTyrRS and wild-type EcTyrRS.
From: Functional genetic encoding of sulfotyrosine in mammalian cells
a–b Active site close-ups of the evolved sTyrRS (a, PBD ID: 6WN2) and EcTyrRS (b, PDB ID: 1X8X). The active site surfaces are in cyan. Four residues included in library construction are labeled. c–d Recognition of ligands by sTyrRS (c) and the wild-type EcTyrRS (d). Carbon atoms in ligands are shown in green. Carbon atoms in proteins are shown in silver. All oxygen atoms are in red, nitrogen atoms are in blue.
