PCKRS RS/tRNA Pair Development Year 2010 ncAA(s) Incorporated N-epsilon-((1-(6-nitrobenzo[d][1,3]dioxol-5-yl)ethoxy)carbonyl)-L-lysine
Anap-2C RS/tRNA Pair Development Year 2009 ncAA(s) Incorporated 3-(Naphthalen-2 ylamino)-2 aminopropanoic acid (Nap)