Table 2. Specific domain-wise superimpositions of representative structures for AtNTR_CC and AtNTR_AC subunits.

Domain name	AtNTR_CC subunit A		AtNTR_CC subunit B
	RMSD(nm) AtNTR_AC subunit A	RMSD(nm) AtNTR_AC subunit B	RMSD(nm) AtNTR_AC subunit A	RMSD(nm) AtNTR_AC subunit B	Average
FAD upper region	0.18858	0.14478	0.18912	0.14990	0.168095
PD	0.30917	0.28113	0.30554	0.26828	0.29103
FAD lower region	0.28758	0.27163	0.25641	0.19249	0.252028
The linker region	0.48554	0.49334	0.66165	0.60617	0.561675
Trx	0.18401	0.20260	0.18348	0.24763	0.20443
NTR (FAD+PD)	0.40628	0.39075	0.32255	0.24760	0.341795