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. 2016 Nov 3;7:1639. doi: 10.3389/fpls.2016.01639

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Copyright © 2016 Wong, Tan, Serra, Xiao, Sze, Yang and Tam.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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2D NOESY spectrum and 3D structure of gB5. (A) Superposition of the gB5 backbone traces from the final 20 ensembles solution structures and restrained energy minimized structure. (B) The ribbon representation of the gB5 structure. The disulfide bonds are formed between CysI-CysIV, CysII-CysV, CysIII-CysVI, and CysVII-CysVIII. (C) The NOE cross peaks between Hβs of Cys12 and Cys24, displayed by Sparky 3.115. (D) Electrostatic surface of gB5 and hevein (PDB: 1HEV) in two views revealing the chitin-binding domain. The distribution of electrostatic charges was illustrated in red (negatively charged), blue (positively charged) and white (neutral). The residues (gB5: S19, F21, Y23, and Y30; hevein: S19, W21, W23, and Y30) have been shown to play an important role in binding toward chitin.