Figure 1

Ribbon diagrams of different cysteine-capping motifs in LRR structures, viewed from the convex side of the LRR domains: ( a ) the LRRNT capping motif in the crystal structure of bovine decorin [29], PDB code 1XKU; ( b ) the LRRCT capping motif in the crystal structure of the Nogo receptor ectodomain [46], PDB code 1OZN; ( c ) the LRRCE capping motif in the crystal structure of bovine decorin [29]. The different secondary structure elements are identified as follows: green arrows, β-strands; red ribbons, α-helices; orange ribbons, 3₁₀ helices and β-turns; pink tubes, short polyproline II segments; yellow sticks, disulphide bonds. The N- and C-terminal ends in each panel are indicated. (Reproduced from [5] with permission from Birkhäuser Verlag AG)