Multiple Assemblies exist for SMTL entry 2ppb
Crystal structure of the T. thermophilus RNAP polymerase elongation complex with the ntp substrate analog and antibiotic streptolydigin; X-RAY DIFFRACTION 3.00 Å

	SMTL ID 2ppb.1 Ligands STREPTOLYDIGIN; ZINC ION; MAGNESIUM ION; DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER Polypeptides DNA-directed RNA polymerase alpha chain; DNA-directed RNA polymerase beta chain; DNA-directed RNA polymerase beta' chain; DNA-directed RNA polymerase omega chain Oligo-state hetero-2-1-1-1-mer
	SMTL ID 2ppb.2 Ligands DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER; STREPTOLYDIGIN; ZINC ION; MAGNESIUM ION Polypeptides DNA-directed RNA polymerase alpha chain; DNA-directed RNA polymerase beta chain; DNA-directed RNA polymerase beta' chain; DNA-directed RNA polymerase omega chain Oligo-state hetero-2-1-1-1-mer