TABLE 3.

Inhibition of laccase purified from C. thermophilium

Inhibitor	Concn (mM)	% Inhibitiona
Sodium azide	0.01	12
	0.05	84
	0.1	96
	10	96
EDTA	1	34
	2	39
	5	67
	10	95
	25	100
Thioglycolic acid	0.1	91
	0.2	94
	1.0	100

^aAll values are the means of triplicate measurements, and the coefficients of variation were less than 5%; 100% activity was the activity obtained when 17-U/ml assay mixture containing 0.1 mM syringaldazine as a substrate was used.