Structural and Functional Studies of the Phage Sf6 Terminase Small Subunit Reveal a DNA-Spooling Device Facilitated by Structural Plasticity.
Zhao, H., Kamau, Y.N., Christensen, T.E., Tang, L.(2012) J Mol Biol 423: 413-426
- PubMed: 22858866 
- DOI: 10.1016/j.jmb.2012.07.016
- Primary Citation of Related Structures:  
4DYC, 4DYQ, 4DYR, 4DZJ, 4DZP - PubMed Abstract: 
In many DNA viruses, genome packaging is initiated by the small subunit of the packaging terminase, which specifically binds to the packaging signal on viral DNA and directs assembly of the terminase holoenzyme. We have experimentally mapped the DNA-interacting region on Shigella virus Sf6 terminase small subunit gp1, which occupies extended surface areas encircling the gp1 octamer, indicating that DNA wraps around gp1 through extensive contacts ...