Table 2.

Catalytic efficiency of the CA isoforms.

Isoform	Kcat (s–1)	KM (mM)	Kcat/KM (M−1 s−1)
I	2.0 × 105	4.0	5.0 × 107
II	1.4 × 106	9.3	1.5 × 108
III	1.3 × 104	33.3	4.0 × 105
IV	1.1 × 106	21.5	5.1 × 107
VA	2.9 × 105	10.0	2.9 × 107
VB	9.5 × 105	9.7	9.8 × 107
VI	3.4 × 105	6.9	4.9 × 107
VII	9.5 × 106	11.4	8.3 × 107
IX	1.1 × 106	6.9	1.6 × 108
XII	4.2 × 105	12.0	3.5 × 107
XIII	1.5 × 105	13.8	1.1 × 107
XIV	3.1 × 105	7.9	3.9 × 107