>5x4z_U mol:protein length:115 DNA-directed RNA polymerase subunitMASFRFCLECNNMLYPKEDKENQRLLYSCRNCDYTELAEDPKVYRHELITNIGETAGIVDDIGQDPTLPRSDKECPECHSRDCVFFQSQQRRKDTNMTLFYVCLNCKKTFRDESE