Data collection	BabAAD-Nb19-ABBA
Space group	P 1 21 1
Cell dimensions
a, b, c (Å)	99.7, 68.4, 176.6
α, β, γ (°)	90.0, 104.4, 90.0
Resolution (Å)	39.45–2.70 (2.77–2.70)*
R meas	6.0 (88.4)*
I/σI	15.1 (2.1)*
CC1/2	99.9 (86.4)*
Completeness (%)	99.2 (99.3)*
Redundancy	4.3 (4.5)*
Refinement
Resolution (Å)	39.5–2.7
No. reflections	63297
Rwork/ Rfree	22.9 / 28.3
No. atoms
Protein	13995
Water	4
B-factors
Protein	110.6
Water	95.5
R.m.s deviations
Bond lengths (Å)	0.01
Bond angles (º)

^*Highest resolution shell is shown in parenthesis.