3wog

Crystal structure plant lectin in complex with ligand

spinqualitylabelsall models 3wog, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3wog is a 2 chain structure with sequence from Phaseolus vulgaris. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2Å Ligands: CA, MAN, MN, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PHAE_PHAVU This insecticidal carbohydrate-binding lectin is toxic for the cowpea weevil. Publication Abstract from PubMed Phytohemagglutinin from Phaseolus vulgaris (PHA-E), a legume lectin, has an unusual specificity toward biantennary galactosylated N-glycan with bisecting N-acetylglucosamine (GlcNAc). To investigate the interaction in detail, we have solved the crystal structures of PHA-E without ligand and in complex with biantennary N-glycan derivatives. PHA-E interacts with the trisaccharide unit (Galbeta1-4GlcNAcbeta1-2Man) in a manner completely different from that of mannose/glucose-specific legume lectins. The inner mannose residue binds to a novel site on the protein, and its rotation is opposite to that occurring in the monosaccharide-binding site of other lectins around the sugar O3 axis. Saturation-transfer difference NMR using biantennary di-galactosylated and bisected glycans reveals that PHA-E interacts with both antennas almost equally. The unique carbohydrate interaction explains the glycan-binding specificity and high affinity. Phytohemagglutinin from Phaseolus vulgaris (PHA-E) displays a novel glycan recognition mode using a common legume lectin fold.,Nagae M, Soga K, Morita-Matsumoto K, Hanashima S, Ikeda A, Yamamoto K, Yamaguchi Y Glycobiology. 2014 Apr;24(4):368-78. doi: 10.1093/glycob/cwu004. Epub 2014 Jan, 16. PMID:24436051 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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