(e) Modelling.

Methods/software	Dummy-atom (DAMMIN), multiphase dummy-atom (MONSA1.45) and rigid-body modelling (SASREF7) (ATSAS 2.6.0; Petoukhov et al., 2012 ▸)
	mCZ38BS	ZBTB38:mCZ38BS
Shape modelling/software	DAMMIN	MONSA1.45
q-range for fit (Å−1)	0.01–0.2	0.0126–0.2
Symmetry/anisotropy assumptions	P1	P1
No. of individual model reconstructions	20 (normalized spatial discrepancy among models 0.74)	>20 calculations yielding similar models.
χ2, CorMap P-value	1.12, 0.85	ZBTB38:mCZ38BS, 1.28, 0.124; with mCZ38BS, 0.91, 0.676
Relative phase volumes, R g values for complex and DNA	n.r.	ZBTB38, 0.519, 26.11; mCZ38BS, 0.482; 20.17
Atomistic modelling/software		SASREF7
q-range for fit (Å−1)		0.008–0.336
Symmetry/anisotropy assumptions		P1
No. of individual model reconstructions		>20, best fit selected
χ2, CorMap P-value		1.65, 0.03