6q0q
From Proteopedia
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==Crystal structure of Human galectin-3 CRD in complex with Methyl 3-O-(1-{3-O-[1-(b-D-galactopyranosyl)-1,2,3-triazol-4-yl]-methyl-b-D-galactopyranosyl}-1,2,3-triazol-4-yl)-methyl-b-D-galactopyranoside== | ==Crystal structure of Human galectin-3 CRD in complex with Methyl 3-O-(1-{3-O-[1-(b-D-galactopyranosyl)-1,2,3-triazol-4-yl]-methyl-b-D-galactopyranosyl}-1,2,3-triazol-4-yl)-methyl-b-D-galactopyranoside== | ||
| - | <StructureSection load='6q0q' size='340' side='right'caption='[[6q0q]]' scene=''> | + | <StructureSection load='6q0q' size='340' side='right'caption='[[6q0q]], [[Resolution|resolution]] 1.99Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6Q0Q OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6Q0Q FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6q0q]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6Q0Q OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6Q0Q FirstGlance]. <br> |
| - | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6q0q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6q0q OCA], [http://pdbe.org/6q0q PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6q0q RCSB], [http://www.ebi.ac.uk/pdbsum/6q0q PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6q0q ProSAT]</span></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=P8G:(2~{R},3~{R},4~{S},5~{R},6~{R})-2-(hydroxymethyl)-6-[4-[[(2~{R},3~{S},4~{S},5~{R},6~{R})-2-(hydroxymethyl)-6-[4-[[(2~{R},3~{S},4~{S},5~{R},6~{R})-2-(hydroxymethyl)-6-methoxy-3,5-bis(oxidanyl)oxan-4-yl]oxymethyl]-1,2,3-triazol-1-yl]-3,5-bis(oxidanyl)oxan-4-yl]oxymethyl]-1,2,3-triazol-1-yl]oxane-3,4,5-triol'>P8G</scene></td></tr> |
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LGALS3, MAC2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6q0q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6q0q OCA], [http://pdbe.org/6q0q PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6q0q RCSB], [http://www.ebi.ac.uk/pdbsum/6q0q PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6q0q ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | == Function == | ||
| + | [[http://www.uniprot.org/uniprot/LEG3_HUMAN LEG3_HUMAN]] Galactose-specific lectin which binds IgE. May mediate with the alpha-3, beta-1 integrin the stimulation by CSPG4 of endothelial cells migration. Together with DMBT1, required for terminal differentiation of columnar epithelial cells during early embryogenesis (By similarity). In the nucleus: acts as a pre-mRNA splicing factor. Involved in acute inflammatory responses including neutrophil activation and adhesion, chemoattraction of monocytes macrophages, opsonization of apoptotic neutrophils, and activation of mast cells.<ref>PMID:15181153</ref> <ref>PMID:19594635</ref> <ref>PMID:19616076</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Galectins play key roles in numerous biological processes. Their mode of action depends on their localization which can be extracellular, cytoplasmic or nuclear, and is partly mediated through interactions with beta-galactose containing glycans. Galectins have emerged as novel therapeutic targets notably for the treatment of inflammatory disorders and cancers. This has stimulated the design of carbohydrate-based inhibitors targeting the carbohydrate recognition domains (CRDs) of the galectins. Pursuing this approach, we reasoned that linear oligo-galactosides obtained by straightforward iterative click-chemistry could mimic poly-lactosamine motifs expressed at eukaryote cell surfaces which the extracellular form of galectin-3, a prominent member of the galectin family, specifically recognizes. Affinities towards galectin-3 consistently increased with the length of the representative oligogalactosides but without reaching that of oligo-lactosamines. Elucidation of the X-ray crystal structures of the galectin-3 CRD in complex with a synthesized di- and tri-galactoside confirmed that the compounds bind within the carbohydrate-binding site. The atomic structures revealed that binding interactions mainly occur with the galactose moiety at the non-reducing end, primarily with subsites C and D of the CRD, differing from oligo-lactosamine which bind more consistently across the whole groove formed by the five subsites (A-E) of the galectin-3 CRD. | ||
| + | |||
| + | Linear triazole-linked pseudo oligogalactosides as scaffolds for galectin inhibitor development.,Dussouy C, Kishor C, Lambert A, Lamoureux C, Blanchard H, Grandjean C Chem Biol Drug Des. 2020 Mar 27. doi: 10.1111/cbdd.13683. PMID:32220037<ref>PMID:32220037</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 6q0q" style="background-color:#fffaf0;"></div> | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Galectin 3D structures|Galectin 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Human]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Blanchard H]] | + | [[Category: Blanchard, H]] |
| - | [[Category: Kishor C]] | + | [[Category: Kishor, C]] |
| + | [[Category: Sugar binding protein]] | ||
Revision as of 10:50, 24 December 2020
Crystal structure of Human galectin-3 CRD in complex with Methyl 3-O-(1-{3-O-[1-(b-D-galactopyranosyl)-1,2,3-triazol-4-yl]-methyl-b-D-galactopyranosyl}-1,2,3-triazol-4-yl)-methyl-b-D-galactopyranoside
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