title: Preliminary X-ray diffraction study of ribulose-1,5-bisphosphate carboxylase from Rhodospirillum rubrum.
abstract: Crystals from the dimeric enzyme ribulose-1,5-bisphosphate carboxylase of the photosynthetic bacterium Rhodospirillum rubrum have been obtained from the gene product expressed in Escherichia coli. The crystals are of the quarternary complex comprising enzyme: activator CO2 (as a carbamate): Mg2+: 2- carboxyarabinitol -1,5-bisphosphate (as a transition state analog). X-ray diffraction photographs show symmetry consistent with space group P4(1)2(1)2 or the corresponding enantiomorphic space group. Cell parameters are a = b = 82 A, c = 324 A with two subunits per asymmetric unit. The crystals diffract to at least 3 A resolution.
mesh_terms: D002245:Carbon Dioxide; D008274:Magnesium; D010428:Pentosephosphates; D011487:Protein Conformation; D012247:Rhodospirillum rubrum / Q000201:enzymology*; D012273:Ribulose-Bisphosphate Carboxylase; D013402:Sugar Alcohols; D013403:Sugar Phosphates; D014961:X-Ray Diffraction
chemical_list: D010428:Pentosephosphates; D013402:Sugar Alcohols; D013403:Sugar Phosphates; D002245:Carbon Dioxide; C032687:2-carboxyarabinitol 1,5-biphosphate; D012273:Ribulose-Bisphosphate Carboxylase; D008274:Magnesium