Hofmeister series: the hydrolytic activity of Aspergillus niger lipase depends on specific anion effects.
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.
Pinna
M Cristina
MC
Dipartimento di Scienze Chimiche, Università di Cagliari-CSGI, S.S. 554 Bivio Sestu, 09042 Monserrato (CA), Italy.
Salis
Andrea
A
Monduzzi
Maura
M
Ninham
Barry W
BW
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
D000838:Anions; D002021:Buffers; D005656:Fungal Proteins; D009596:Nitrophenols; C008642:4-nitrophenyl acetate; D008049:Lipase