>2pn0_D mol:protein length:141 Prokaryotic transcription elongation factor GreA/GreBGHMSIKPKIMISSLDAERLEILLETLSQNAFPGRDDLEAELARAEVVDPEEIPPTVVTMNSTVRFRVESSAEEFCLTLVYPKDVDTSGEKISILAPVGSALLGLAQGDEIEWPKPGGGVLRVRIVEVTYQPERSGEYYRGS