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. 2005 May;14(5):1190–1200. doi: 10.1110/ps.041258305

Table 1.

Steady-state kinetic parameters for reaction of 2XALAS

			Glycine		SCoA
Enzyme	Temperature^a (°C)	k_cat (sec⁻¹)	K_m (mM)	k_cat/K_m (sec⁻¹ mM⁻¹)	K_m (μM)	k_cat/K_m (sec^{−1 μ}M⁻¹)
2XALAS	20	0.11 ± 0.02	11.7 ± 0.3	0.009	0.63 ± 0.03	0.175
ALAS	20	0.016 ± 0.002^b	14.0 ± 2.0^b	0.0011^b	11.0 ± 1.0^b	0.0015^b
2XALAS	30	0.92 ± 0.02	16.7 ± 2.4	0.055	0.45 ± 0.03	2.044
ALAS	30	0.167 ± 0.016^c	23.0 ± 1.0^c	0.007^c	2.30 ± 0.10^c	0.072^c

^a Determinations of ALAS activity were conducted at either 20°C or 30°C.

^b From Cheltsov et al. (2001).

^c From Gong et al. (1998).