... (2001) RNase U2 and alpha-sarcin: a study of relationships. Meth Enzymol 341,33 5–3 51.3 Lacadena J, A ´lvarez-Garcı´ a E, Carreras-Sangra N,Herrero-Gala´n E, Alegre-Cebollada J, Garcı´ a- OrtegaL, ... interactions establishedin the active site is also of relevance. The active site: structural and electrostatic basis of HtA function The reaction catalyzed by ribotoxins follows a mecha-nism of ... assignment and structure calculation by cyana⁄ candid, a set of 20 structures thatsatisfy the experimental constraints was obtained. The Solution structure of hirsutellin A A. Viegas et al.2382...