Multiple Assemblies exist for SMTL entry 4yln
E. coli Transcription Initiation Complex - 17-bp spacer and 4-nt RNA; X-RAY DIFFRACTION 5.50 Å

	SMTL ID 4yln.1 Ligands RNA (5'-D(*(GTP))-R(P*AP*GP*U)-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 RpoD Oligo-state hetero-2-1-1-1-1-mer
	SMTL ID 4yln.2 Ligands RNA (5'-D(*(GTP))-R(P*AP*GP*U)-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 RpoD Oligo-state hetero-2-1-1-1-1-mer
	SMTL ID 4yln.3 Ligands RNA (5'-D(*(GTP))-R(P*AP*GP*U)-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 RpoD Oligo-state hetero-2-1-1-1-1-mer