Table 2.

Thermodynamic binding parameters for Zn(II) binding to AAP, WT ArgE and H355A ArgE (ΔH (kcal/mol), (ΔG cal/mol·K) and (ΔS cal/mol·K))

Parameter	AAP	WT ArgE a	H355A ArgE
Δ H 1	2.1	4.6	6.0
Δ H 2	1.1	-2.7	-3.7
Δ G 1	-11.0	-5.9	-6.0
Δ G 2	-7.5	-7.6	-4.7
Δ S 1	43	35	40
Δ S 2	29	16	3.5

^aPreviously reported (ref. (McGregor et al. 2005)).