(A) The full crystal structure in cartoon representation. (B) The crystal structure (red) superimposed with the best DALI matches for the N-terminal (PDB: 3UN9; DALI Z-score 7.5) and the C-terminal domain (PDB: 3TD7; DALI Z-score 10.1). (C) The two best CASP predictions for the N-terminal domain (D1), models T0890TS236_1 (MULTICOM-construct) and T0890TS486_1 (TASSER), yielded a GDT_TS of 68.0 and 67.7 for D1 and of 30.0 and 31.8 for the whole structure. (D) The best CASP predictions for the C-terminal domain (D2). T0890TS250_1 (Seok-server) yielded a GDT_TS of 74.8 for D2 and 44.7 for the whole structure. T0890TS119_1 represents the three almost identical models T0890TS119_1 (HHPred0), T0890TS349_1 (HHPred1) and T0890TS313_1 (HHGG), which yielded a GDT_TS of 69.8, 69.8 and 70.5 for D2 and of 40.8, 40.8 and 41.0 for the whole structure. T0890TS464_1 (tsspred2) yielded a GDT_TS of 59.2 for D2 and 33.4 for the whole structure.