title: Expression, purification and crystallization of human tau-protein kinase I/glycogen synthase kinase-3beta.
abstract: Human tau-protein kinase I (TPK-I; also known as glycogen synthase kinase-3beta, GSK-3beta) is a serine/threonine protein kinase. Full-length TPK-I/GSK-3beta was expressed in Escherichia coli as a fusion protein with a 6xHis tag at the C-terminus and was crystallized using the hanging-drop vapour-diffusion method. Prismatic crystals of dimensions 0.4 x 0.2 x 0.1 mm were obtained using 12-15%(w/v) polyethylene glycol 6000 as a precipitant at 278 K. The crystals belong to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 82.9, b = 86.1, c = 178.1 A measured at 100 K, diffract to 2.3 A resolution and seem to contain two enzyme molecules per asymmetric unit.
authors.affiliation: Mitsubishi Kasei Institute of Life Sciences, 11 Minami-Ooya, Machida, Tokyo 194-8511, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Aoki
authors.forename: M
authors.initials: M
authors.lastname: Iwamoto-Sugai
authors.forename: I
authors.initials: I
authors.lastname: Sugiura
authors.forename: C
authors.initials: C
authors.lastname: Sasaki
authors.forename: T
authors.initials: T
authors.lastname: Hasegawa
authors.forename: C
authors.initials: C
authors.lastname: Okumura
authors.forename: S
authors.initials: S
authors.lastname: Sugio
authors.forename: T
authors.initials: T
authors.lastname: Kohno
authors.forename: T
authors.initials: T
authors.lastname: Matsuzaki
mesh_terms: D017871:Calcium-Calmodulin-Dependent Protein Kinases / Q000737:chemistry* / Q000302:isolation & purification; D003460:Crystallization; D018360:Crystallography, X-Ray; D038362:Glycogen Synthase Kinase 3; D038341:Glycogen Synthase Kinases; D006801:Humans; D017346:Protein Serine-Threonine Kinases / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification
chemical_list: D038341:Glycogen Synthase Kinases; D017346:Protein Serine-Threonine Kinases; D017871:Calcium-Calmodulin-Dependent Protein Kinases; D038362:Glycogen Synthase Kinase 3; C080888:tau-protein kinase