>1xcv_A mol:protein length:139 Diphtheria toxin repressor mutantMKDLVDTTEMYLRTIYELEEEGVTPLRARIAERLEQSGPTVSQTVARMERDGLVVVASDRSLQMTPTGRTLATAVMRKARLAERLLTDIIGLDINKVHDEADRWEHVMSDEVERRLVKVLKDVSRSPFGNPIPGLDELG