PDB Method Taxonomy Organism Name Reference_pub Resolution Stage  Contents   Ligands 
5UI5 XRD Prokaryote Aquifex aeolicus Crystal structure of Aquifex aeolicus sigma N bound to promoter DNA 28223493 3.40 Å Subunit RNA polymerase sigma factor RpoN
2AU3 XRD Prokaryote Aquifex aeolicus Crystal structure of the Aquifex aeolicus primase (zinc binding and RNA polymerase domains) 16285921 2.00 Å RNAP DNA primase ZN