title: Crystallization and some properties of acetylpolyamine amidohydrolase from Mycoplana bullata.
abstract: During the course of investigations on the catabolism of acetylpolyamines by microorganisms, we found that acetylpolyamine amidohydrolase was produced by Mycoplana bullata FERM BP-1845 and isolated the enzyme from the cell-free extract in crystalline form. The enzyme had an apparent molecular weight of 67 kDa and was composed of two identical subunits. The enzyme activity was inhibited by o-oxyquinoline and the crystalline enzyme contained one zinc atom per each subunit. The enzyme had an optimal pH around 8.0 with acetylputrescine as substrate and showed broad substrate specificity and high affinity towards various acetylpolyamines, such as acetylputrescine, acetylcadaverine, acetylspermidine, and acetylspermine.
authors.affiliation: Tokyo Research Laboratories, Kyowa Hakko Kogyo Co., Ltd., Japan.
authors.forename: K
authors.initials: K
authors.lastname: Fujishiro
authors.forename: M
authors.initials: M
authors.lastname: Ando
authors.forename: T
authors.initials: T
authors.lastname: Uwajima
mesh_terms: D000192:Actinomycetales / Q000201:enzymology*; D000619:Aminohydrolases / Q000037:antagonists & inhibitors / Q000302:isolation & purification / Q000378:metabolism*; D000645:Ammonium Sulfate; D002851:Chromatography, High Pressure Liquid; D003460:Crystallization; D004591:Electrophoresis, Polyacrylamide Gel; D006863:Hydrogen-Ion Concentration; D046911:Macromolecular Substances; D008970:Molecular Weight; D013379:Substrate Specificity; D015032:Zinc / Q000032:analysis; D000581:Amidohydrolases
chemical_list: D000619:Aminohydrolases; D000645:Ammonium Sulfate; D046911:Macromolecular Substances; D015032:Zinc; C058087:acetylpolyamine amidohydrolase; D000581:Amidohydrolases