title: Three-dimensional diffuse x-ray scattering from crystals of Staphylococcal nuclease.
abstract: We have developed methods for obtaining and characterizing three-dimensional maps of the reciprocal-space distribution of diffuse x-ray scattering from protein crystals, and have used the methods to study the nature of disorder in crystals of Staphylococcal nuclease. Experimentally obtained maps are 99.5% complete in the reciprocal-space resolution range of 10 A-2.5 A, show symmetry consistent with the P41 space group of the unit cell, and are highly reproducible. Quantitative comparisons of the data with three-dimensional simulations imply liquid-like motions of the protein [Caspar, D. L. D., Clarage, J., Salunke, D. M. & Clarage, M. (1988) Nature (London) 332, 659-662], with a correlation length of 10 A and a root-mean-square displacement of 0.36 A.
authors.affiliation: Department of Physics, Princeton University, Princeton, NJ 08544, USA.
authors.forename: M E
authors.initials: ME
authors.lastname: Wall
authors.forename: S E
authors.initials: SE
authors.lastname: Ealick
authors.forename: S M
authors.initials: SM
authors.lastname: Gruner
mesh_terms: D018360:Crystallography, X-Ray / Q000379:methods; D008836:Micrococcal Nuclease / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D011487:Protein Conformation; D015203:Reproducibility of Results
chemical_list: D008836:Micrococcal Nuclease