Conformational change of a unique sequence in a fungal galectin from Agrocybe cylindracea controls glycan ligand-binding specificity.
Kuwabara, N., Hu, D., Tateno, H., Makyio, H., Hirabayashi, J., Kato, R.(2013) FEBS Lett 587: 3620-3625
- PubMed: 24036446 
- DOI: 10.1016/j.febslet.2013.08.046
- Primary Citation of Related Structures:  
3WG1, 3WG2, 3WG3, 3WG4 - PubMed Abstract: 
A fungal galectin from Agrocybe cylindracea (ACG) exhibits broad binding specificity for β-galactose-containing glycans. We determined the crystal structures of wild-type ACG and the N46A mutant, with and without glycan ligands. From these structures and a saccharide-binding analysis of the N46A mutant, we revealed that a conformational change of a unique insertion sequence containing Asn46 provides two binding modes for ACG, and thereby confers broad binding specificity ...