Table 1. Crystallization conditions of the AKR screen.

	Precipitant	Buffer, pH	Additive
1	20% PEG 4000	0.1M sodium citrate pH 5.6	0.1M lithium sulfate
2	20% PEG 4000	0.1M sodium citrate pH 5.6	0.2M sodium citrate
3	23% PEG 4000	0.1M sodium citrate pH 5.6	0.2M ammonium acetate
4	23% PEG 4000	0.1M sodium citrate pH 5.6	0.2M sodium acetate
5	26% PEG 4000	0.1M sodium citrate pH 5.6	0.2M ammonium sulfate
6	26% PEG 4000	0.1M sodium citrate pH 5.6	0.2M sodium acetate
7	29% PEG 4000	0.1M sodium citrate pH 5.6	0.2M ammonium acetate
8	29% PEG 4000	0.1M sodium citrate pH 5.6	0.2M ammonium sulfate
9	20% PEG 4000	0.1M MES pH 6.4	0.2M ammonium acetate
10	20% PEG 4000	0.1M MES pH 6.4	0.2M ammonium sulfate
11	23% PEG 4000	0.1M MES pH 6.4	0.2M sodium citrate
12	23% PEG 4000	0.1M MES pH 6.4	0.2M ammonium sulfate
13	26% PEG 4000	0.1M MES pH 6.4	0.1M lithium sulfate
14	26% PEG 4000	0.1M MES pH 6.4	0.2M ammonium acetate
15	29% PEG 4000	0.1M MES pH 6.4	0.1M lithium sulfate
16	29% PEG 4000	0.1M MES pH 6.4	0.2M sodium acetate
17	20% PEG 4000	0.1M HEPES pH 7.5	0.2M ammonium sulfate
18	20% PEG 4000	0.1M HEPES pH 7.5	0.2M sodium acetate
19	23% PEG 4000	0.1M HEPES pH 7.5	0.1M lithium sulfate
20	23% PEG 4000	0.1M HEPES pH 7.5	0.2M sodium acetate
21	26% PEG 4000	0.1M HEPES pH 7.5	0.2M ammonium acetate
22	26% PEG 4000	0.1M HEPES pH 7.5	0.2M sodium citrate
23	29% PEG 4000	0.1M HEPES pH 7.5	0.1M lithium sulfate
24	29% PEG 4000	0.1M HEPES pH 7.5	0.2M sodium citrate