Table 1. The temperature dependence of the 1^st order rate constant and reaction half-times for SPI2-SRHWAP-His₆ hydrolysis in solution, at H 8.2, determined by HPLC.

T [°C]	k ± S.D. (s−1×10−5)	t1/2 (h)
50	4.10±0.63	5
45	2.05±0.11	9
40	0.76±0.08	25
37	0.22±0.07	86
28	0.09±0.005	206