Fig. 5

The interaction diagram of XylF with levoglucosan (A) and xylose (B). The white cartoon model is the secondary structure of XylF, the yellow stick model is the key residue of XylF, the green stick model in A is levoglucosan skeleton and in B is xylose skeleton, the red stick model is oxygen, the thick blue stick model is nitrogen, and the thin blue stick model is H-bond