1nik is a 12 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The x-ray structure of complete RNA polymerase II from Saccharomyces cerevisiae has been determined, including a heterodimer of subunits Rpb4 and Rpb7 not present in previous "core" polymerase II structures. The heterodimer maintains the polymerase in the conformation of a transcribing complex, may bind RNA as it emerges from the enzyme, and is in a position to interact with general transcription factors and the Mediator of transcriptional regulation.
Complete, 12-subunit RNA polymerase II at 4.1-A resolution: implications for the initiation of transcription.,Bushnell DA, Kornberg RD Proc Natl Acad Sci U S A. 2003 Jun 10;100(12):6969-73. Epub 2003 May 13. PMID:12746498[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑ Bushnell DA, Kornberg RD. Complete, 12-subunit RNA polymerase II at 4.1-A resolution: implications for the initiation of transcription. Proc Natl Acad Sci U S A. 2003 Jun 10;100(12):6969-73. Epub 2003 May 13. PMID:12746498 doi:10.1073/pnas.1130601100
