The 0.83 A resolution crystal structure of alpha-lytic protease reveals the detailed structure of the active site and identifies a source of conformational strain.
Fuhrmann CN, Kelch BA, Ota N, Agard DA. The 0.83 A resolution crystal structure of alpha-lytic protease reveals the detailed structure of the active site and identifies a source of conformational strain. J Mol Biol. 2004 May 14; 338(5):999-1013.