title: Crystallization and preliminary X-ray diffraction analysis of the ternary human GM-CSF receptor complex.
abstract: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a haemopoietic growth factor that acts though a ternary receptor signalling complex containing specific alpha (GMRalpha) and common beta (betac) receptor subunits. Human GM-CSF is encoded by the gene csf2, while the genes for GMRalpha and betac are csf2ra and csf2rb, respectively. Crystals of the ternary ectodomain complex comprising GM-CSF and the soluble extracellular regions of both the GMRalpha subunit and either betac or its glutamine-substitution mutant N346Q were obtained using the hanging-drop vapour-diffusion method. The best diffracting crystals of the ternary complex were obtained using the N346Q mutation of the betac subunit. These crystals grew using polyethylene glycol 3350 with a high concentration of proline, belonged to space group P6(3)22 and diffracted to 3.3 A resolution.
authors.affiliation: Biota Structural Biology Laboratory, St Vincent's Institute of Medical Research, 41 Victoria Parade, Fitzroy, Victoria 3065, Australia.
authors.forename: Guido
authors.initials: G
authors.lastname: Hansen
authors.forename: Timothy R
authors.initials: TR
authors.lastname: Hercus
authors.forename: Yibin
authors.initials: Y
authors.lastname: Xu
authors.forename: Angel F
authors.initials: AF
authors.lastname: Lopez
authors.forename: Michael W
authors.initials: MW
authors.lastname: Parker
authors.forename: William J
authors.initials: WJ
authors.lastname: McKinstry
mesh_terms: D002851:Chromatography, High Pressure Liquid; D003460:Crystallization; D018360:Crystallography, X-Ray; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D011487:Protein Conformation; D016187:Receptors, Granulocyte-Macrophage Colony-Stimulating Factor / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D011994:Recombinant Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification
chemical_list: D016187:Receptors, Granulocyte-Macrophage Colony-Stimulating Factor; D011994:Recombinant Proteins