title: Cloning, expression, crystallization, and preliminary X-ray analysis of recombinant mouse lipocalin-type prostaglandin D synthase, a somnogen-producing enzyme.
abstract: Lipocalin-type prostaglandin D synthase is the key enzyme for the production of prostaglandin D(2), a potent endogenous somnogen, in the brain. We cloned, produced, and crystallized the native enzyme and selenomethionyl Cys(65)Ala mutants of the recombinant mouse protein by the hanging drop vapor-diffusion method with both malonate and citrate as precipitants. The native crystals obtained with malonate belong to orthorhombic space group P2(1)2(1)2(1) with lattice constants a = 46.2, b = 66.8, and c = 105.3 A. The selenomethionyl crystals obtained with citrate belong to orthorhombic space group C222(1) with lattice constants a = 45.5, b = 66.8, and c = 104.5 A. The native crystals diffracted beyond 2.1 A resolution.
authors.affiliation: Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, 6-2-4 Furuedai, Suita, Osaka 565-0874.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Irikura
authors.forename: Takashi
authors.initials: T
authors.lastname: Kumasaka
authors.forename: Masaki
authors.initials: M
authors.lastname: Yamamoto
authors.forename: Hideo
authors.initials: H
authors.lastname: Ago
authors.forename: Masashi
authors.initials: M
authors.lastname: Miyano
authors.forename: Kilunga Bruno
authors.initials: KB
authors.lastname: Kubata
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Sakai
authors.forename: Osamu
authors.initials: O
authors.lastname: Hayaishi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Urade
mesh_terms: D000818:Animals; D001921:Brain / Q000201:enzymology; D003001:Cloning, Molecular; D003460:Crystallization; D018360:Crystallography, X-Ray; D015870:Gene Expression; D019746:Intramolecular Oxidoreductases / Q000096:biosynthesis / Q000737:chemistry* / Q000235:genetics / Q000648:ultrastructure; D054834:Lipocalins; D051379:Mice; D015230:Prostaglandin D2 / Q000096:biosynthesis; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000737:chemistry / Q000648:ultrastructure
chemical_list: D054834:Lipocalins; D011994:Recombinant Proteins; D019746:Intramolecular Oxidoreductases; C022466:prostaglandin R2 D-isomerase; D015230:Prostaglandin D2