Table 5.

Contents of α-helix of erythrose reductase in the presence of various concentrations (mM) of metal ions in pH 3.0, at 28 °C

Zn2+		Cu2+		Mn2+		Fe2+
(mM)	α-helix (%)	(mM)	α-helix (%)	(mM)	α-helix (%)	(mM)	α-helix (%)
0	45.3	0	45.3	0	45.3	0	45.3
0.05	46.2	0.05	44.9	0.05	45.8	0.05	45.0
0.1	46.4	0.1	44.7	0.1	45.2	0.1	44.5
0.25	46.8	0.25	44.1	0.25	44.2	0.25	44.2
0.5	46.8	0.5	42.2	0.5	43.9	0.5	42.3