Table 1.

Crystal Data and MAD phasing statistics

	UGGGGU	brUGGGGU
Crystal data
Wavelength, Å	0.800	0.9195	0.9192	0.8984
Space group	P4212	P4212
Unit cell dimensions, Å	a = b = 36.154, c = 74.133	a = b = 36.13, c = 74.12
Resolution, Å	0.61	1.7	1.7	1.5
Unique reflections	207,845*	10,427*	10,424*	14,969*
Completeness, %	92.9 (61.5†)*	100	100	100
I/σ	26 (2.0†)*
Rsym, %	6.6 (33.9)*	11.3	11.4	11.1
Rwork/Rfree, %	10.32/11.17
Phasing statistics at 1.7-Å resolution
Phasing power	Isomorphous centric	—	0.81	1.68
	Isomorphous acentric	—	1.29	2.16
Figure of merit	Before density modifications		0.77
	After density modifications		0.82

^*Friedel pairs unmerged. 

^† Last reflection bin, 0.62–0.61 Å.