TABLE 1.

X-ray data collection and reduction statistics

Parameter	Vh1·sca4-VBS-N	Vh1·sca4-VBS-C
Space group	P212121	I23
Unit cell dimensions
a	54.4 Å	141.4 Å
b	76.4 Å	141.4 Å
c	114.6 Å	141.4 Å
α = β = γ	90°	90°
Asymmetric unit	1 heterodimer	1 heterodimer
Matthews coefficient	3.82	3.85
Solvent content	0.678	0.68
Resolution	114 Å-1.99 Å	100 Å-2.76 Å
Last shell	2.1 Å-1.99 Å	2.91 Å-2.76 Å
Total measurements	196,687	182,498
Number of unique reflections	33,356	12,290
Last shell	4,774	1,759
Wilson B	37 Å2	71 Å2
Wavelength	1 Å	0.97867 Å
R-mergea	0.034	0.059
Last shell	0.499	0.49
I/σ(I)	26.3	36.4
Last shell	3.3	6.1
Completeness	0.999	1.0
Last shell	1.0	0.998
Redundancy	5.9	14.8
Last shell	5.3	15

^a R-merge = Σ_hklΣ_i|I_i(hkl) − ¯Ī_i¯(h̄kl̄)|/Σ_hklΣ_iI_i(hkl).