Table 2. Summary of native SAD structure determinations.

	HK9S	Netrin G2	CysZ	TorTTorSS	DnaK
No. of crystals	6	5	7	13	5
Space group	I4122	P3221	C2	C2221	I422
Resolution ()	2.3	2.3	2.3	2.8	2.3
Unique ordered residues	127	312	453	1148	1200
Unique S atoms	3	26	20	28	32
Other anomalous scatterers	Cl	Ca2+	Cl, SO4 2	SO4 2	SO4 2, ATP, Mg2+
Total anomalous substructure	4	27	25	31	52
PDB entry	3va9	3tbd	3tx3	3o1i	4jn4