Understanding direct salt effects on protein crystal polymorphism is addressed by comparing different crystal forms (triclinic, monoclinic, tetragonal and orthorhombic) for hen, turkey, bob white quail and human lysozymes. Four new structures of hen ...
Understanding direct salt effects on protein crystal polymorphism is addressed by comparing different crystal forms (triclinic, monoclinic, tetragonal and orthorhombic) for hen, turkey, bob white quail and human lysozymes. Four new structures of hen egg-white lysozyme are reported: crystals grown in the presence of NapTS diffracted to 1.85 A, of NaI to 1.6 A, of NaNO(3) to 1.45 A and of KSCN to 1.63 A. These new structures are compared with previously published structures in order to draw a mapping of the surface of different lysozymes interacting with monovalent anions, such as nitrate, chloride, iodide, bromide and thiocyanate. An analysis of the structural sites of these anions in the various lysozyme structures is presented. This study shows common anion sites whatever the crystal form and the chemical nature of anions, while others seem specific to a given geometry and a particular charge environment induced by the crystal packing.
Related Citations:
Locations of Bromide Ions in Tetragonal Lysozyme Crystals Lim, K.,Nadarajah, A.,Forsythe, E.L.,Pusey, M.L. (1998) Acta Crystallogr.,Sect.D D54: 899
High-Resolution Structure (1.33 Ang.) Of a Hewl Lysozyme Tetragonal Crystal Grown in the Apcf Apparatus. Data and Structural Comparison with a Crystal Grown Under Microgravity from Spachab-01 Mission Vaney, M.C.,Maignan, S.,Ries-Kautt, M.,Ducruix, A. (1996) Acta Crystallogr.,Sect.D D52: 505
Refinement of Triclinic Hen Egg-White Lysozyme at Atomic Resolution Walsh, M.A.,Schneider, T.R.,Sieker, L.C.,Dauter, Z.,Lamzin, V.S.,Wilson, K.S. (1998) Acta Crystallogr.,Sect.D D54: 522
Structures of Monoclinic Lysozyme Iodide at 1.6 Ang. And of Triclinic Lysozyme Nitrate at 1.1 Ang Steinrauf, L.K. (1998) Acta Crystallogr.,Sect.D D54: 767
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