>1xzn_B mol:protein length:179 PyrR bifunctional proteinMQKAVVMDEQAIRRALTRIAHEIIERNKGIDGCVLVGIKTRGIYLARRLAERIEQIEGASVPVGELDITLYRDDLTVKTDDHEPLVKGTNVPFPVTERNVILVDDVLFTGRTVRAAMDAVMDLGRPARIQLAVLVDRGHRELPIRADFVGKNVPTSRSELIVVELSEVDGIDQVSIHEK