The structural mechanism of translocation and helicase activity in T7 RNA polymerase.
Yin, Y.W., Steitz, T.A.(2004) Cell 116: 393-404
- PubMed: 15016374 
- DOI: 10.1016/s0092-8674(04)00120-5
- Primary Citation of Related Structures:  
1S76, 1S77 - PubMed Abstract: 
RNA polymerase functions like a molecular motor that can convert chemical energy into the work of strand separation and translocation along the DNA during transcription. The structures of phage T7 RNA polymerase in an elongation phase substrate complex that includes the incoming nucleoside triphosphate and a pretranslocation product complex that includes the product pyrophosphate (PPi) are described here ...