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Figure 1
Structures of SpsB and LepB. The topology diagrams on the left are colour-coded as for the adjacent ribbon diagrams. The conserved catalytic domains are in green, whereas the noncatalytic domain has a core three-stranded β-sheet (blue) flanked by a highly divergent region (grey). Dashed lines represent regions that are not visible in the electron density. The positions of key catalytic residues are shown in circles or in stick form in the ribbon diagrams. N, N-terminus; C, C-terminus; MBP, maltose-binding protein. The LepB structure is from PDB entry 1b12 (Paetzel et al., 1998BB31).

IUCrJ
Volume 3| Part 1| January 2016| Pages 10-19
ISSN: 2052-2525
doi:10.1107/S2052252515019971