Table 2. Comparison of absorbed doses for derivatives of FcγRIII.

All doses are calculated at 14.9 keV (just above the Hg L _I edge) using the I24 beam parameters given in Table 1 ▸ (beam size 10 × 10 µm, 1.5 × 10¹² photons s⁻¹). Changes as a function of energy are illustrated in Fig. 1 ▸. Time to I ₉₅ is the estimated time taken reduce the diffracting power by 5% based on the assumption that an absorbed dose of 43 MGy reduces the diffracting power by 50% (Owen et al., 2006 ▸).

	Native	K2PtCl4	KAuCl4	HgCl2	K2PtCl4 with no backsoak
No. of heavy atoms per monomer	—	2	2	2	2 + 250 mM
Absorption coefficient (mm−1)	0.12	0.35	0.35	0.33	0.76
Dose rate (MGy s−1)	3.74	9.17	9.09	8.61	18.8
Time to reach 30 MGy (s)	8.0	3.7	3.3	3.48	1.60
Time to I 95 (s)	1.14	0.47	0.47	0.50	0.23