>sp|B2A2Z8|SYS_NATTJ Serine--tRNA ligase OS=Natranaerobius thermophilus GN=serS MLDVKYIRNNPDEARKACVQKGEDDHVDEILKYDEQRRKILTDLEVLKNKRNTVSKEIGQ LKKEGHDAQDKIAEMKEVSDKVKEMDDELKKVDEQLNYHLLCIPNIPNPDVPVGDDDEDN QVVKQVGEPVKKDYFKPHWEVAENLNLLDFKRAGKVTGTRFVNYVGDAARLERALIDFMI DVHVTEHGYVEMMPPFIANRDSMTGTGQLPKFEDDMYKLEDMEYFLIPTAEVTLTNLYRD EILPGDFLPRYLVAFTPCFRKEAGAHGRDTRGLIRQHQFNKVEMVKFVEPEKSYQELDSL VANAERVLQLLELPYQISLMCTGDLGFAAAKKYDLEVWLPSYDTYREISSCSNFEDFQAR RANIRYRPEEGEKARFVHTLNGSGLAVGRTLAAILENYQNPDGTVTIPEVLKPYFNGRDV IS