Figure 1. XynA protein and its structure. (A) Gel-filtration analysis showing XynA as monomer in solution. The red and black lines represent the UV absorption of XynA and the standard proteins at 280 nM respectively. (B) The topological organization of XynA. The GH10 catalytic domain, the N-terminal domain and C-terminal domain are colored in cyan, pink and purple, respectively. (C) Overall structure of XynA is like a shape of “mug”. The color is assigned as shown in front.