5av7

Structural highlights

Function

LECC_CALSE Mannose-binding lectin (PubMed:9111143, PubMed:18266762, PubMed:14561768, PubMed:26971576, PubMed:28973127). Preferentially binds mannose at concentrations ranging between 5 and 25 mM, but binds also glucose. Has a marked preference for methylated sugar derivatives, such as alpha-MeMan and alpha-MeGlc, at concentration down to 5 mM (PubMed:14561768). Binds to N-glycans, but not to glycolipid-type or other type of glycans (PubMed:28973127). Binds N-linked high-mannose-type glycans (PubMed:18266762, PubMed:28973127). Has a preference for smaller (Man(2)-Man(6)) high-mannose-type glycans to larger (Man(7)-Man(9)) ones. Recognizes both alpha1-6 extended and alpha1-3 extended monoantennary glycans. The addition of alpha1-2Man to the Man-alpha1-3Man-beta branch results in a significant loss of affinity, but beta1-2GlcNAc has some affinity. Has less affinity for biantennary glycans (PubMed:18266762). However, affinity is significant for the biantennary complex-type N-glycans with bisecting GlcNAc (PubMed:18266762, PubMed:26971576, PubMed:28973127). No affinity is observed for tri- and tetra-antennary glycans (PubMed:18266762). Binds bisected glycans of the mouse brain. Selectively binds to bisecting N-glycans which are in back-fold conformation, and does not favor a glycan with an extend conformation (PubMed:26971576). Has hemagglutinating activity against rabbit erythrocytes at 0.3 ug/ml and against trypsin-treated human erythrocytes at 5 ug/ml. Has mitogenic activity in murine cells (PubMed:9111143).^{[1] [2] [3] [4] [5]}

References

1. ↑ Bourne Y, Roig-Zamboni V, Barre A, Peumans WJ, Astoul CH, Van Damme EJ, Rouge P. The crystal structure of the Calystegia sepium agglutinin reveals a novel quaternary arrangement of lectin subunits with a beta-prism fold. J Biol Chem. 2004 Jan 2;279(1):527-33. Epub 2003 Oct 15. PMID:14561768 doi:10.1074/jbc.M308218200
2. ↑ Nakamura-Tsuruta S, Uchiyama N, Peumans WJ, Van Damme EJ, Totani K, Ito Y, Hirabayashi J. Analysis of the sugar-binding specificity of mannose-binding-type Jacalin-related lectins by frontal affinity chromatography--an approach to functional classification. FEBS J. 2008 Mar;275(6):1227-39. PMID:18266762 doi:10.1111/j.1742-4658.2008.06282.x
3. ↑ Nagae M, Kanagawa M, Morita-Matsumoto K, Hanashima S, Kizuka Y, Taniguchi N, Yamaguchi Y. Atomic visualization of a flipped-back conformation of bisected glycans bound to specific lectins. Sci Rep. 2016 Mar 14;6:22973. doi: 10.1038/srep22973. PMID:26971576 doi:http://dx.doi.org/10.1038/srep22973
4. ↑ Nagae M, Mishra SK, Hanashima S, Tateno H, Yamaguchi Y. Distinct roles for each N-glycan branch interacting with mannose-binding type Jacalin-related lectins Orysata and Calsepa. Glycobiology. 2017 Sep 7. doi: 10.1093/glycob/cwx081. PMID:28973127 doi:http://dx.doi.org/10.1093/glycob/cwx081
5. ↑ Peumans WJ, Winter HC, Bemer V, Van Leuven F, Goldstein IJ, Truffa-Bachi P, Van Damme EJ. Isolation of a novel plant lectin with an unusual specificity from Calystegia sepium. Glycoconj J. 1997 Feb;14(2):259-65. PMID:9111143 doi:10.1023/a:1018502107707
6. ↑ Nagae M, Kanagawa M, Morita-Matsumoto K, Hanashima S, Kizuka Y, Taniguchi N, Yamaguchi Y. Atomic visualization of a flipped-back conformation of bisected glycans bound to specific lectins. Sci Rep. 2016 Mar 14;6:22973. doi: 10.1038/srep22973. PMID:26971576 doi:http://dx.doi.org/10.1038/srep22973