Extended Data Fig. 1: Structures of non-canonical amino acids used in this study.
From: Quintuply orthogonal pyrrolysyl-tRNA synthetase/tRNAPyl pairs

a. Chemical structure of Nε-tert-butyloxycarbonyl-l-lysine BocK 1. b. Chemical structure of N6-((allyloxy)carbonyl)-l-lysine (AllocK) 2.