title: Crystallization and preliminary crystallographic studies of a SAM domain at the C-terminus of human p73alpha.
abstract: p73 is a recently discovered homologue of the tumour suppressor p53 and contains all three functional domains of p53. The alpha-splice variant of p73 (p73alpha) contains an additional structural domain near its C--terminus that has sequence homology with the sterile alpha-motif (SAM) domain. This domain is considered to be responsible for mediating protein-protein interactions. Pyramidal crystals of human p73alpha SAM domain were obtained by the hanging-drop vapour-diffusion method with ammonium dihydrogen orthophosphate as the precipitant. The crystals diffract to 2.54 A resolution and belong to the tetragonal space group P4(1)2(1)2, with unit-cell parameters a = b = 32.02, c = 133.84 A. The structure was solved by molecular replacement using the NMR structure of the same protein as the search model.
authors.affiliation: Cambridge University Chemical Laboratory and Centre for Protein Engineering, MRC Centre, Cambridge, England.
authors.forename: W K
authors.initials: WK
authors.lastname: Wang
authors.forename: M R
authors.initials: MR
authors.lastname: Proctor
authors.forename: A M
authors.initials: AM
authors.lastname: Buckle
authors.forename: M
authors.initials: M
authors.lastname: Bycroft
authors.forename: Y W
authors.initials: YW
authors.lastname: Chen
mesh_terms: D020816:Amino Acid Motifs; D003460:Crystallization; D018360:Crystallography, X-Ray; D004268:DNA-Binding Proteins / Q000096:biosynthesis / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D016147:Genes, Tumor Suppressor; D005822:Genetic Vectors / Q000138:chemical synthesis; D006801:Humans; D019906:Nuclear Magnetic Resonance, Biomolecular; D009687:Nuclear Proteins / Q000096:biosynthesis / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D010446:Peptide Fragments / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification; D017434:Protein Structure, Tertiary; D000072160:Tumor Protein p73; D025521:Tumor Suppressor Proteins
chemical_list: D004268:DNA-Binding Proteins; D009687:Nuclear Proteins; D010446:Peptide Fragments; C000606460:TP73 protein, human; D000072160:Tumor Protein p73; D025521:Tumor Suppressor Proteins