title: Crystallization and preliminary analysis of crystals of cytochrome c2 from Rhodopseudomonas capsulata.
abstract: Two crystal forms of the cytochrome c2 isolated from Rhodopseudomonas capsulata have been obtained. One crystal form (type I), grown from ammonium sulfate solutions at pH 7.5, belongs to the space group R32 with unit cell dimensions of a = b = 100.0 A, and c = 162.2 A in the hexagonal setting. These crystals most likely contain two molecules in the asymmetric unit. The other crystal form (type II) was obtained from polyethylene glycol 6000 solutions at pH 6.5. Type II crystals belong to the space group P3(1)21 or P3(2)21 with one molecule per asymmetric unit and unit cell dimensions of a = b = 52.4 A, and c = 87.9 A. Both crystal forms diffract to at least 1.8 A resolution and appear to be resistant to radiation damage.
authors.affiliation: Department of Biochemistry, University of Arizona, Tucson 85721.
authors.forename: H M
authors.initials: HM
authors.lastname: Holden
authors.forename: T E
authors.initials: TE
authors.lastname: Meyer
authors.forename: M A
authors.initials: MA
authors.lastname: Cusanovich
authors.forename: F
authors.initials: F
authors.lastname: Daldal
authors.forename: I
authors.initials: I
authors.lastname: Rayment
mesh_terms: D003461:Crystallography; D003574:Cytochrome c Group; D045362:Cytochromes c2; D012241:Rhodopseudomonas / Q000032:analysis*
chemical_list: D003574:Cytochrome c Group; D045362:Cytochromes c2