Asp <-> AspP Asp <-> AspP Asp <-> AspP Asp <-> AspP AspP <-> ASA ASA -> Lys ASA -> Lys ASA <-> Hser ASA <-> Hser Hser -> PHser PHser -> Thr PHser -> Cysta Thr -> Ile Lys -> LysTRNA Thr -> ThrTRNA Ile -> IleTRNA Lys -> Sacc Thr -> Gly