Table 6. Kinetic parameters for GR enzymes from various organisms.

Organism	V max (µmol min−1 mg−1)	K m(NADPH) (µM)	K m(GSSG) (µM)
Streptococcus pneumoniae †	319 ± 16	23.2 ± 3.3	231 ± 25
Homo sapiens ‡	147§	8.5	65
Escherichia coli ¶	360.6§	16	66
Saccharomyces cerevisiae ††	166.7§	15	74.6
Plasmodium falciparum ‡‡	204§	4.8 ± 0.4	69 ± 2
Calf liver§§	190§	21.1 ± 1	101 ± 7
Rat liver¶¶	207§	8.2 ± 0.8	26.3 ± 5.7
Phaeodactylum tricornutum §	190§	14	60
Pea	26§	3	62
Spinach†	246§	2.78 ± 0.34	196 ± 40

^†This work.

^‡Savvides & Karplus (1996 ▸), Storey et al. (1998 ▸).

^§Errors were not reported.

^¶Mittl & Schulz (1994 ▸).

^††Yu & Zhou (2007 ▸).

^‡‡Böhme et al. (2000 ▸).

^§§Carlberg & Mannervik (1981 ▸).

^¶¶Carlberg et al. (1981 ▸).

^†††Arias et al. (2010 ▸).

^‡‡‡Connell & Mullet (1986 ▸).

^§§§Halliwell & Foyer (1978 ▸).