Multiple Assemblies exist for SMTL entry 4xlr
Crystal structure of T.aquaticus transcription initiation complex with CarD containing bubble promoter and RNA; X-RAY DIFFRACTION 4.30 Å

	SMTL ID 4xlr.1 Ligands RNA (5'-R(P*UP*CP*GP*A)-3'); ZINC ION; MAGNESIUM ION Polypeptides DNA-directed RNA polymerase subunit alpha; DNA-directed RNA polymerase subunit beta; DNA-directed RNA polymerase subunit beta'; DNA-directed RNA polymerase subunit omega; RNA polymerase sigma factor SigA; CarD-like transcriptional regulator Oligo-state hetero-2-1-1-1-1-1-mer
	SMTL ID 4xlr.2 Ligands RNA (5'-R(P*UP*CP*GP*A)-3'); ZINC ION; MAGNESIUM ION Polypeptides DNA-directed RNA polymerase subunit alpha; DNA-directed RNA polymerase subunit beta; DNA-directed RNA polymerase subunit beta'; DNA-directed RNA polymerase subunit omega; RNA polymerase sigma factor SigA; CarD-like transcriptional regulator Oligo-state hetero-2-1-1-1-1-1-mer