>3k4g_D mol:protein length:86 DNA-directed RNA polymerase subunit alphaMEKPEFDPILLRPVDDLELTVRSANCLKAEAIHYIGDLVQRTEVELLKTPNLGKKSLTEIKDVLASRGLSLGMRLENWPPASIADE