>2D0K_1|Chains A, B|Dihydrofolate reductase|Escherichia coli (562) AISLIAALAVDRVIGNENALPWNLPADLAWFKRNTLNKPVIYGRHTWESIGRPLPGRKNIILSSQPGTDDRVTWVKSVDEAIAAAGDVPEIFVIGGGRVYEQFLPKAQKLYLTHIDAEVEGDTHFPDYEPDDWESVFSEFHDADAQNSHSYSFEILERR