Table 2. Data-collection statistics.

Values in parentheses are for the highest of 20 resolution shells.

	Apo	AMP-bound
Wavelength (Å)	1.5418	1.5418
Space group	P212121	P212121
Unit-cell parameters (Å)	a = 52.72, b = 73.05, c = 75.01	a = 53.24, b = 73.18, c = 75.38
Resolution range (Å)	20–1.85 (1.90–1.85)	20–2.00 (2.05–2.00)
Mean I/σ(I)	19.6 (2.1)	16.4 (2.3)
Rmerge†	0.045 (0.498)	0.079 (0.650)
Completeness (%)	99.7 (99.6)	99.1 (92.9)
Multiplicity	5.0 (3.0)	6.6 (3.9)
No. of unique reflections	25330	20333

^† R _merge = .