Table 4.

Numbers of residues and closest atoms in the zinc ion environment

Zn	No.			Aggregate residue counts					No. of closest atoms
	Structures	Ligands	2nd-shell residues	Φ	∏	G	P	HOH	C	N	O	HOH	S
Class I	4	19	55	20	16	3	2	12	11	6	40	12	0
Class II	4	16	36	10	22	0	1	2	9	10	21	2	1
Class III	10	40	80	24	39	2	3	10	30	17	34	10	0
Class IV	4	16	51	11	25	2	1	11	18	2	29	11	0
Class V	2	10	36	7	15	1	2	11	8	15	9	11	0
Class VI	3	13	29	10	12	0	1	6	10	1	16	6	1