Structural Basis for the Transition from Initiation to Elongation Transcription in T7 RNA Polymerase
Yin, Y.W., Steitz, T.A.(2002) Science 298: 1387-1395
- PubMed: 12242451 
- DOI: 10.1126/science.1077464
- Primary Citation of Related Structures:  
1MSW - PubMed Abstract: 
To make messenger RNA transcripts, bacteriophage T7 RNA polymerase (T7 RNAP) undergoes a transition from an initiation phase, which only makes short RNA fragments, to a stable elongation phase. We have determined at 2.1 angstrom resolution the crystal structure of a T7 RNAP elongation complex with 30 base pairs of duplex DNA containing a "transcription bubble" interacting with a 17-nucleotide RNA transcript ...