Table 1. Crystallographic data, structure solution, and refinement statistics.

	DhaK-Dha complex	Ta6Br14	KAu(CN)2	PIP*	Apo-DhaK
Data collection
Resolution, ņ	1.75 (1.78-1.75)	2.45 (2.52-2.45)	2.45 (2.55-2.45)	2.45 (2.55-2.45)	2.0 (2.04-2.00)
Unique reflections	78,957	29,777	27,533	30,483	51,496
Redundancy	3.7	3.1	2.3	2.4	2.9
Completeness, %†	95.7 (97.5)	99.8 (99.3)	94.4 (90.4)	96.2 (93.6)	93.1 (60.6)
I/σ (|)	19.4	21.3	23.4	21.6	23.7
Rmerge, %†‡	4.6 (17.2)	4.6 (7.4)	3.5 (6.4)	4.3 (7.9)	4.6 (10.0)
Structure solution
Resolution range, Å		25.0-4.5	25.0-2.5	25.0-2.5
Heavy-atom sites		6	5	4
Phasing power (acentric/centric)		3.0/2.7	2.0/1.5	1.3/1.3
RCullis (acentric/centric)		58.1/55.4	67.1/69.1	81.7/79.6
Refinement statistics
Resolution range, Å	25.00-1.75				25.00-2.00
Rfactor§/Rfree,¶ %	17.15/20.1				18.9/23.8
rmsd bond lengths, Å	0.012				0.018
rmsd bond angles, °	1.618				1.780
No. of reflections	76,798				50,052
No. of protein atoms	5,026				5,026
No. of water molecules	508				485

rmsd, root-mean-square deviation from ideal geometry

^*PIP, Di-μ-iodobis(ethylenediamine) diplatinum (II)-nitrate

^†Numbers in parentheses refer to the indicated highest resolution shell

^‡R_merge = , where I(hkl; i) is the intensity of an individual measurement and <I(hkl)> is the average intensity from multiple observations

^§R_factor =

^¶R_free = the R factor against 5% of the data removed prior to refinement