Table 2. Rotation angles (°) between RS monomers in the crystallographic structures.

	A–B	B–C	C–A	Reference
RS-APO	93	110	157	This work
RS-RBF	86	110	163	This work
RS-ROS	86	113	162	This work
RS-NRP	87	111	163	This work
E. coli RS†	85	124	151	Liao et al. (2001 ▶)

^†Chain IDs in the E. coli enzyme have been modified with respect to its original letters (PDB entry 1i8d) to preserve the location of the active site between chains A and B.