>3kjr_A mol:protein length:511 Dihydrofolate reductase/thymidylate synthase MSNSYEGCGDLTIFVAVALNKVIGHKNQIPWPHITHDFRFLRNGTTYIPPEVLSKNPDI QNVVIFGRKTYESIPKASLPLKNRINVILSRTVKEVPGCLVYEDLSTAIRDLRANVPHN KIFILGGSFLYKEVLDNGLCDKIYLTRLNKEYPGDTYFPDIPDTFEITAISPTFSTDFV SYDFVIYERKDCKTVFPDPPFDQLLMTGTDISVPKPKYVACPGVRIRNHEEFQYLDILA DVLSHGVLKPNRTGTDAYSKFGYQMRFDLSRSFPLLTTKKVALRSIIEELLWFIKGSTN GNDLLAKNVRIWELNGRRDFLDKNGFTDREEHDLGPIYGFQWRHFGAEYLDMHADYTGK GIDQLAEIINRIKTNPNDRRLIVCSWNVSDLKKMALPPCHCFFQFYVSDNKLSCMMHQR SCDLGLGVPFNIASYSILTAMVAQVCGLGLGEFVHNLADAHIYVDHVDAVTTQIARIPH PFPRLRLNPDIRNIEDFTIDDIVVEDYVSHPPIPMAMSA