title: Hofmeister series: the hydrolytic activity of Aspergillus niger lipase depends on specific anion effects.
abstract: The specific activity of lipase A (Aspergillus niger) toward the hydrolysis of p-nitrophenyl acetate (p-NPA) is shown to increase as a result of sodium salt addition according to specific ion effects of the Hofmeister series. This shows explicitly that the Hofmeister effect is due to the different specific interactions between anions and the enzymatic surface.
authors.affiliation: Dipartimento di Scienze Chimiche, Università di Cagliari-CSGI, S.S. 554 Bivio Sestu, 09042 Monserrato (CA), Italy.
authors.forename: M Cristina
authors.initials: MC
authors.lastname: Pinna
authors.forename: Andrea
authors.initials: A
authors.lastname: Salis
authors.forename: Maura
authors.initials: M
authors.lastname: Monduzzi
authors.forename: Barry W
authors.initials: BW
authors.lastname: Ninham
mesh_terms: D000838:Anions; D001234:Aspergillus niger / Q000201:enzymology*; D002021:Buffers; D005656:Fungal Proteins / Q000737:chemistry / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008049:Lipase / Q000737:chemistry / Q000378:metabolism*; D009596:Nitrophenols / Q000378:metabolism
chemical_list: D000838:Anions; D002021:Buffers; D005656:Fungal Proteins; D009596:Nitrophenols; C008642:4-nitrophenyl acetate; D008049:Lipase