Table 3. Structure solution and refinement of CagXct.

PDB code	5h3v
Resolution range (Å)	38.07–1.40 (1.43–1.40)
Final R cryst	0.200 (0.291)
Final R free	0.249 (0.442)
No. of twin domains	2
Twin fractions	0.509 (h, k, l), 0.491 (−h, −k, l)
L-test for twinning	〈|L|〉 = 0.40, 〈L 2〉 = 0.22
R.m.s. deviations
Bonds (Å)	0.012
Angles (°)	1.712
Wilson B factor (Å2)†	20.2
No. of protein residues	206
No. of solvent atoms	145
Average B-factor values
Protein (Å2)	15.0
Solvent (Å2)	22.6
Ramachandran plot analysis‡
Most favoured (%)	85.2
Additionally allowed (%)	13.6
Generously allowed (%)	0.6
Disallowed	0.6

^†The Wilson B factor was calculated using SFCHECK (Vaguine et al., 1999 ▸).

^‡The Ramachandran plot analysis was performed by PROCHECK (Laskowski et al., 1993 ▸).