Table 1.

Heavy-atom phasing statistics

	Hg sites (data set S37)	Pt sites (data set S30)
Number of sites	2	4
Resolution	2.45 Å	2.50 Å
R-Cullis (acentric/centric)	0.91/0.80	0.96/0.90
Phasing power (acentric/centric)	0.77/0.63	0.43/0.37
FOM	acentric 0.24, centric 0.45, all 0.25