Crystallization and preliminary X-ray diffraction analysis of a Lys49-phospholipase A2 complexed with caffeic acid, a molecule with inhibitory properties against snake venoms - Shimabuku, Patrícia S.; Fernandes, Carlos A. H.; Magro, Angelo J.; Costa, Tássia R.; Soares, Andreimar Martins; Fontes, Marcos R. M. (Acta Crystallographica. Section F: Structural Biology and Crystallization Communications, 2011)