TABLE 2.

Crystal structure refinement data

Parameter	Value
Mean figure of merit	0.25a
Refinement resolution	20-2.2 Å
No. of reflections	21,142
R factor	24.50%
Free R factor	28.20%
Ramachandran plot
Residues in most-favored regions	89.7%
Residues in additional allowed regions	9.5%
Residues in generously allowed regions	0.8%

^aFor 8,681 phased reflections.