title: Crystallization and preliminary X-ray analysis of flap endonuclease 1 (FEN1) from Desulfurococcus amylolyticus.
abstract: Flap endonuclease 1 (FEN1) is a structure-specific nuclease that removes 5'-overhanging flaps in DNA repair and removes the RNA/DNA primer during maturation of the Okazaki fragment in lagging-strand DNA replication. FEN1 from the hyperthermophilic archaeon Desulfurococcus amylolyticus was expressed in Escherichia coli, purified and crystallized using the sitting-drop vapour-diffusion method with monoammonium dihydrogen phosphate as the precipitant at pH 8.3. X-ray diffraction data were collected to 2.00 A resolution. The space group of the crystal was determined as the primitive hexagonal space group P321, with unit-cell parameters a = b = 103.76, c = 84.58 A. The crystal contained one molecule in the asymmetric unit.
authors.affiliation: Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
authors.forename: Tomoko
authors.initials: T
authors.lastname: Mase
authors.forename: Keiko
authors.initials: K
authors.lastname: Kubota
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Miyazono
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Kawarabayasi
authors.forename: Masaru
authors.initials: M
authors.lastname: Tanokura
mesh_terms: D003460:Crystallization; D018360:Crystallography, X-Ray; D019620:Desulfurococcaceae / Q000201:enzymology*; D045585:Flap Endonucleases / Q000737:chemistry*
chemical_list: D045585:Flap Endonucleases