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. 2006 Sep 29;188(23):8087–8094. doi: 10.1128/JB.00990-06

TABLE 3.

Kinetic constants of the H. neapolitanus carboxysomal carbonic anhydrase CsoSCA

Fraction	Kinetic constant value for:
	Hydration reaction^a		Dehydration reaction^b
	k_cat (s⁻¹)	K_m (mM)	k_cat (s⁻¹)	K_m (mM)
rCsoSCA	(8.9 ± 0.5) × 10⁴	3.2 (± 0.4)	(4.6 ± 1.2) × 10⁴	9.3 (± 2.1)
Broken carboxysomes	(6.5 ± 0.9) × 10⁴	3.6 (± 0.7)	(3.1 ± 0.8) × 10⁴	10.1 (± 3.2)
Intact carboxysomes	(1.8 ± 0.2) × 10⁴	12.2 (± 2.3)	ND	ND

^a

The hydration reaction was performed at pH 8.0.

^b

The dehydration reaction was performed at pH 7.0. ND, not determined.