>6ab1_A: Pyrrolysine--tRNA ligase GSHMASAPALTKSQTDRLEVLLNPKDEISLNSGKPFRELESELLSRRKKDLQQIYAEERENYLGKLEREITRFFVDRGFL EIKSPILIPLEYIERMGIDNDTELSKQIFRVDKNFCLRPMLAPNLANYLRKLDRALPDPIKIFEIGPCYRKESDGKEHLE EFTMLNFCQMGSGCTRENLESIITDFLNHLGIDFKIVGDSCMVFGDTLDVMHGDLELSSAVVGPIPLDREWGIDKPWIGA GFGLERLLKVKHDFKNIKRAARSGSYYNGISTNL