This beta-prism fold lectin is the C-terminal domain of the Vibrio cholerae cytolytic pore-forming toxin hemolysin [1-2]. It binds to N-glycans with a heptasaccharide GlcNAc4Man3 core (NGA2) [3].

1: Crystal structure of the Vibrio cholerae cytolysin (VCC) pro-toxin and its assembly into a heptameric transmembrane pore. Olson R, Gouaux E; J Mol Biol. 2005;350:997-1016. PMID:15978620

2: Crystal structure of the Vibrio cholerae cytolysin heptamer reveals common features among disparate pore-forming toxins. De S, Olson R; Proc Natl Acad Sci U S A. 2011;108:7385-7390. PMID:21502531

3: Vibrio cholerae cytolysin recognizes the heptasaccharide core of complex N-glycans with nanomolar affinity. Levan S, De S, Olson R; J Mol Biol. 2013;425:944-957. PMID:23274141