Toroidal structure of lambda-exonuclease.
Kovall, R., Matthews, B.W.(1997) Science 277: 1824-1827
- PubMed: 9295273 
- DOI: 10.1126/science.277.5333.1824
- Primary Citation of Related Structures:  
1AVQ - PubMed Abstract: 
Structure determination at 2.4 angstrom resolution shows that lambda-exonuclease consists of three subunits that form a toroid. The central channel is funnel shaped, tapering from an inner diameter of about 30 angstroms at the wider end to 15 angstroms at the narrow end ...