title: Development of a novel immobilization method for enzymes from hyperthermophiles.
abstract: Peptide tags containing tyrosines (Y-tag) were introduced at the C-terminus of a hyperthermophilic enzyme, alkaline phosphatase from Pyrococcus furiosus (PfuAP). Immobilization of the recombinant PfuAPs onto water-in-oil-in-water (W/O/W) type microcapsules was performed by an in situ polymerization method. All the recombinant PfuAPs prepared in this study were quantitatively immobilized onto microcapsules. The PfuAP-immobilized microcapsules showed no significant loss of enzymatic activity until the 5th round of assays. This result implies that the recombinant PfuAPs were covalently immobilized onto microcapsules. Immobilized PfuAP tagged with a Y-tag having the sequence GGYYY exhibited approximately a twofold higher catalytic activity compared with the wild-type PfuAP.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan.
authors.forename: Kosuke
authors.initials: K
authors.lastname: Minamihata
authors.forename: Masamichi
authors.initials: M
authors.lastname: Tokunaga
authors.forename: Noriho
authors.initials: N
authors.lastname: Kamiya
authors.forename: Shiro
authors.initials: S
authors.lastname: Kiyoyama
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Sakuraba
authors.forename: Toshihisa
authors.initials: T
authors.lastname: Ohshima
authors.forename: Masahiro
authors.initials: M
authors.lastname: Goto