Table 1. Catalytic activity of M tuberculosis RNase P protein preparations and holoenzymes.

Ammonium acetate, mM	RNase P-G holoenzyme*	RNase P-G protein*	RNase P-G holoenzyme*	RNase P-G holoenzyme**	RNase P-U holoenzyme*	RNase P-U protein*	RNase P-U holoenzyme*	RNase P-U holoenzyme**
50	61 ± 41	53 ± 30	8 ± 14	66 ± 12	25 ± 18	0	25 ± 18	21 ± 15
100	63 ± 59	60 ± 52	3 ± 15	25 ± 13	30 ± 33	0	30 ± 33	25 ± 27
250	53 ± 53	42 ± 70	11 ± 25	86 ± 20	35 ± 39	0	35 ± 39	29 ± 32
500	43 ± 39	13 ± 20	30 ± 19	245 ± 16	46 ± 48	0	46 ± 48	38 ± 40

The % product formed in case of RNase P-G and RNase P-U protein alone, and holoenzymes has been shown. The holoenzyme activity has been calculated by subtracting the % product formed by protein alone from that of the holoenzyme. The holoenzyme activity has been further converted to μM product/mM enzyme/second. The activities shown are *% product formed or **μM product/mM enzyme/second. The enzyme activities are Mean ± SE of three independent values.