Data were collected and processed using CrysAlis Pro14 and XDS . The structure solution and model building were carried out with Phenix (AutoBuild) and CCP4 (ARP/wARP, BUCCANEER) . The structure was solved by molecular replacement with the structure of R. erythropolis (PDB: 4C3Y) as a search model. The resulting model was then refined with REFMAC 5.8 and manually rebuilt with WinCOOT 0.8.9.2 . The quality of the model was evaluated using Molprobity and the wwPDB Validation Service . The data were deposited in the PDB with PDB code 7P18. The quality of diffraction data and structure refinement is present in Table (supplementary material).