5FLM: Structure Of Transcribing Mammalian Rna Polymerase II
reference: Structure of transcribing mammalian RNA polymerase II., Bernecky C, Herzog F, Baumeister W, Plitzko JM, Cramer P, Nature. 2016 Jan 28;529(7587):551-4. doi: 10.1038/nature16482. Epub 2016 Jan 20. PMID: 26789250

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).