TABLE 1.

Effect of UTP concentration on poly(A)⁺ RNA degradation rate, t_1/2, and percent degraded^a

[UTP] (mM)	k (min−1)	t1/2 (min)	% Degraded after 7 h
0	4.6 × 10−3	176	82
0.1	2.7 × 10−2	26	94
2	7.0 × 10−2	11	99

^aThe degradation rates (k) and t_1/2 values for the 0.1 and 2 mM UTP samples are for the initial, rapid degradation event from 0 to 65 min. The k value for the 0 mM UTP sample is for the single degradation event from 25 to 425 min. The t_1/2 value for the 0 mM UTP sample includes the 25-min lag period before degradation begins.