Table 4. HPRT kinetic parameters.

HPRT	Km (guanine) (μM)	Km (PRPP) (μM)	kcat (s−1)
B. anthracis 1	5.2 ± 1.8	111.6 ± 16.8	22
B. subtilis	--	165.6 ± 11.9	25.4
C. burnetii	17.6 ± 2.0	44 ± 3.3	12.9
P. phosphoreum	--	81 ± 12.5a	30.4a
N. meningitidis	68 ± 7.0	103 ± 12	9.6
E. colib	--	192 ± 7.0a	59a
L. pneumophilac	10.5 ± 1.1	60 ± 9	--
M. tuberculosisd	10 ± 1	650 ± 70	0.193

PRPP = phosphoribosyl pyrophosphate.

^aobtained with hypoxanthine as the purine base.

^bGuddat et al. (2002).

^cZhang et al. (2016).

^dPatta et al. (2015).

^± standard error.