title: Structure determination of tubular crystals of membrane proteins. I. Indexing of diffraction patterns.
abstract: Indexing of diffraction patterns is the starting point of every crystallographic analysis. The diffraction patterns from helical particles consist of a series of layer-planes, the indexing of which involves the assignment of the start numbers of the helices that contribute to the layer-planes. The indexing could be challenging if the diameter of the helical particle is large and if the conventional indexing methods based on selection rule is used. Presented here is a tutorial on how to index them using (h, k; n) indexing method, which is particularly useful for tubular crystals of membrane proteins.
authors.affiliation: Institute of Molecular and Cellular Biosciences, The University of Tokyo, Japan. ct@iam.u-tokyo.ac.jp
authors.forename: C
authors.initials: C
authors.lastname: Toyoshima
mesh_terms: D000252:Calcium-Transporting ATPases / Q000737:chemistry; D003461:Crystallography / Q000379:methods*; D014450:Electron Transport Complex III / Q000737:chemistry; D003576:Electron Transport Complex IV / Q000737:chemistry; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008565:Membrane Proteins / Q000737:chemistry*; D008854:Microscopy, Electron / Q000379:methods*; D017433:Protein Structure, Secondary; D011950:Receptors, Cholinergic / Q000737:chemistry
chemical_list: D008565:Membrane Proteins; D011950:Receptors, Cholinergic; D003576:Electron Transport Complex IV; D014450:Electron Transport Complex III; D000252:Calcium-Transporting ATPases