Table I. Crystallographic data collection and refinement statistics.

	AGT	Methyl-AGT	Benzyl-AGT	Au-AGTa
X-ray diffraction data
Wavelength (Å)	1.08	1.08	1.08	1.0781	1.0400	1.0397	1.0162
Unit cellb (Å)
a, b	71.28	71.40	71.60	71.75	71.75	71.75	71.75
c	73.61	76.33	76.04	75.08	75.08	75.08	75.08
Resolution (Å)	2.00	2.00	2.50	2.30	2.00	2.14	2.05
Observations	47 948	28 548	16 165	57 959	103 385	84 949	98 569
Unique reflections	14 538	15 222	7991	10 030	15 112	12 357	14 165
I/σ	17.1	13.5	8.9	22.1	25.6	24.3	24.8
Completeness (%)	97.0	97.2	98.9	95.7	96.7	96.5	97.1
Final shell	96.7	98.4	98.7	85.3	90.3	87.3	93.8
Rsymc	0.061	0.051	0.106	0.073	0.055	0.064	0.058
Final shell	0.367	0.255	0.444	0.310	0.204	0.332	0.293
Mosaicity (°)	0.96	0.52	0.73	0.74	0.54	0.59	0.56
Model refinement
Resolution (Å)	20.0–2.0	20.0–2.0	20.0–2.5
Rcrystd	0.197	0.199	0.194
Rfreee	0.218	0.229	0.230
Residues	5–35, 45–181	5–35, 46–176	5–35, 45–179
Protein atoms	1275	1235	1270
Solvent atoms	153	182	86
R.m.s.d. bonds (Å)	0.007	0.007	0.009
R.m.s.d. angles (°)	1.40	1.35	1.37

^aInitial figure of merit = 0.69, density modified = 0.82 (20.0–2.5 Å).

^bSpace group = P3₁2₁.

^cR_sym = Σ_hkl ∣ I(hkl) – < I(hkl) > ∣ / Σ < I(hkl) >

^dR_cryst = Σ_hkl ∣ F_obs(hkl) – < F_calc(hkl) > ∣ / Σhkl < F_obs(hkl) >

^eR_free = R_cryst, calculated using the 10% of reflections against which the model was not refined.