TABLE 2.

Comparison of properties of AgaT with those of the thermostable α-galactosidases of B. stearothermophilus NUB3621 (AgaN) and T. maritima (GalA)^a

Protein	Temp optimum (°C)	pH optimum	Half-life of inactivation	Subunit size (kDa)	No. of subunits
AgaT	93	5.5–6.5	100 min at 92°C, 17 h at 80°C	53.8	4
AgaN	75	6.3–7.0	<10 min at 80°C, 19 h at 70°C	80.3	4
GalA	∼95	5.0–5.5	70 min at 90°C, 48 h at 80°C	63.7	2

^aFor more details about B. stearothermophilus NUB3621 AgaN and T. maritima GalA, see references 16 and 36, respectively.