>2oip_C mol:protein length:519 Chain A, crystal structure of DhfrEKNVSIVVAASVLSSGIGINGQLPWSISEDLKFFSKITNNKCDSNKKNALIMGRKTWDSIGRRPLKNRIIVVISSSLPQDEADPNVVVFRNLEDSIENLMNDDSIENIFVCGGESIYRDALKDNFVDRIYLTRVALEDIEFDTYFPEIPETFLPVYMSQTFCTKNISYDFMIFEKQEKKTLQNCDPARGQLKSIDDTVDLLGEIFGIRKMGNRHKFPKEEIYNTPSIRFGREHYEFQYLDLLSRVLENGAYRENRTGISTYSIFGQMMRFDMRESFPLLTTKKVAIRGIFEELIWFIKGDTNGNHLIEKKVYIWSGNGSKEYLERIGLGHREENDLGPIYGFQWRHYNGEYKTMHDDYTGVGVDQLAKLIETLKNNPKDRRHILTAWNPSALSQMALPPCHVLSQYYVTNDNCLSCNLYQRSCDLGLGSPFNIASYAILTMMLAQVCGYEPGELAIFIGDAHIYENHLTQLKEQLSRTPRPFPQLKFKRKVENIEDFKWEDIELIGYYPYPTIKMDMAV