title: Expression, purification, crystallization and preliminary X-ray analysis of the ligand-binding domain of metabotropic glutamate receptor 7.
abstract: Glutamate is the major excitatory neurotransmitter and its metabotropic glutamate receptor (mGluR) plays an important role in the central nervous system. The ligand-binding domain (LBD) of mGluR subtype 7 (mGluR7) was produced using the baculovirus expression system and purified from the culture medium. The purified protein was characterized by gel-filtration chromatography, SDS-PAGE and a ligand-binding assay. Crystals of mGluR7 LBD were grown at 293 K by the hanging-drop vapour-diffusion method. The crystals diffracted X-rays to 3.30 A resolution using synchrotron radiation and belong to the trigonal space group P3(1)21, with unit-cell parameters a = b = 92.4, c = 114.3 A. Assuming the presence of one protomer per crystallographic asymmetric unit, the Matthews coefficient V(M) was calculated to be 2.5 A3 Da(-1) and the solvent content was 51%.
authors.affiliation: Biomolecular Engineering Research Institute, Suita, Osaka 565-0874, Japan.
authors.forename: Takanori
authors.initials: T
authors.lastname: Muto
authors.forename: Daisuke
authors.initials: D
authors.lastname: Tsuchiya
authors.forename: Kosuke
authors.initials: K
authors.lastname: Morikawa
authors.forename: Hisato
authors.initials: H
authors.lastname: Jingami
mesh_terms: D000818:Animals; D002460:Cell Line; D003460:Crystallization; D018360:Crystallography, X-Ray; D005786:Gene Expression Regulation; D007313:Insecta; D008024:Ligands; D011485:Protein Binding / Q000235:genetics; D017434:Protein Structure, Tertiary / Q000235:genetics; D051381:Rats; D018094:Receptors, Metabotropic Glutamate / Q000096:biosynthesis / Q000737:chemistry* / Q000235:genetics*
chemical_list: D008024:Ligands; D018094:Receptors, Metabotropic Glutamate; C102719:metabotropic glutamate receptor 7