Authors: Shu Quan; Philipp Koldewey; Tim Tapley; Nadine Kirsch; Karen M Ruane; Jennifer Pfizenmaier; Rong Shi; Stephan Hofmann; Linda Foit; Guoping Ren; Ursula Jakob; Zhaohui Xu; Miroslaw Cygler; James C A Bardwell Journal: Nat Struct Mol Biol Date: 2011-02-13 Impact factor: 15.369