title: Unusual twinning in an acetyl coenzyme A synthetase (ADP-forming) from Pyrococcus furiosus.
abstract: A recombinant form of an acetyl coenzyme A synthetase (ADP-forming) from Pyrococcus furiosus has been crystallized. Crystallization was accomplished by the sitting-drop vapour-diffusion technique. Crystals belong to the monoclinic space group C2, with unit-cell parameters a = 131.3, b = 186.1, c = 121.5 angstroms, beta = 122.6 degrees, and diffract to 2.0 angstroms resolution on a synchrotron-radiation source. The unit-cell parameters allow twinning to the higher apparent space-group symmetry F222 by twin-lattice quasi-symmetry. The twinning fraction for the data is close to 40%. Two other data sets in the PDB show similar twinning.
authors.affiliation: Structural Biology and Biophysics, Institute of Biotechnology, University of Helsinki, Viikinkaari 1, PO Box 65, FIN-00014 University of Helsinki, Finland.
authors.forename: Lari
authors.initials: L
authors.lastname: Lehtiö
authors.forename: Igor
authors.initials: I
authors.lastname: Fabrichniy
authors.forename: Thomas
authors.initials: T
authors.lastname: Hansen
authors.forename: Peter
authors.initials: P
authors.lastname: Schönheit
authors.forename: Adrian
authors.initials: A
authors.lastname: Goldman
mesh_terms: D000106:Acetate-CoA Ligase / Q000737:chemistry*; D003460:Crystallization; D018360:Crystallography, X-Ray; D020027:Pyrococcus furiosus / Q000201:enzymology*
chemical_list: D000106:Acetate-CoA Ligase