4A3J

RNA Polymerase II initial transcribing complex with a 2nt DNA-RNA hybrid and soaked with GMPCPP

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.