Table 1.

Kinetic parameters for models of sulfide oxidation

	K m(0.5)	Km(0.5) SE	V max	Vmax SE	R 2	x min	x max	y max	Affinity-l	Affinity-h
55 m
Fit 1	170	10	160	10	0.94	0	–	–	60,000	150,000
Fit 2	140	10	150	5	0.94	20	–	–	68,000	171,000
Fit 3	340	50	270	30	0.95	0	210	–	51,000	130,000
Fit 4	130	10	140	–	0.94	0	–	140	69,000	170,000
Fit 5	85	–	120	2	0.9	0	–	–	90,000	220,000
Hanes-Woolf	25	2	100	1	0.99	100	300	–	60,000	150,000
Allosterica	6	0.6	95	0.5	0.99	0	–	–	68,000	171,000
85 m
Fit 1	210	20	90	5	0.83	0	–	–	12,000	24,000

K_m half-saturation constant (nM ), V_max maximum rate (nM  h⁻¹), x_min minimum sulfide concentration considered (nM ), x_max maximum sulfide concentration considered (nM ), y_max maximum rate considered (nM  h⁻¹), Affinity-l based on 27,500 cells mL⁻¹ (L g⁻¹ wet cells h⁻¹), Affinity-h based on 11,000 cells mL⁻¹ (L g⁻¹ wet cells h⁻¹)

^aFor allosteric, the hill slope was h = 2.252(±0.03)