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| | <StructureSection load='5glw' size='340' side='right'caption='[[5glw]], [[Resolution|resolution]] 2.00Å' scene=''> | | <StructureSection load='5glw' size='340' side='right'caption='[[5glw]], [[Resolution|resolution]] 2.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5glw]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Parasitic_roundworm Parasitic roundworm]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GLW OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5GLW FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5glw]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Toxascaris_leonina Toxascaris leonina]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GLW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5GLW FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5gm0|5gm0]], [[5glv|5glv]], [[5glt|5glt]], [[5glu|5glu]], [[5glz|5glz]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></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=5glw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5glw OCA], [http://pdbe.org/5glw PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5glw RCSB], [http://www.ebi.ac.uk/pdbsum/5glw PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5glw ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5glw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5glw OCA], [https://pdbe.org/5glw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5glw RCSB], [https://www.ebi.ac.uk/pdbsum/5glw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5glw ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/A0A1L1QJZ7_TOXLN A0A1L1QJZ7_TOXLN] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Parasitic roundworm]] | + | [[Category: Toxascaris leonina]] |
| - | [[Category: Hwang, E Y]] | + | [[Category: Hwang EY]] |
| - | [[Category: Jang, S B]] | + | [[Category: Jang SB]] |
| - | [[Category: Anti-inflammation]]
| + | |
| - | [[Category: Carbohydrate]]
| + | |
| - | [[Category: Sugar binding protein]]
| + | |
| - | [[Category: Tl-galectin]]
| + | |
| Structural highlights
Function
A0A1L1QJZ7_TOXLN
Publication Abstract from PubMed
Toxascaris leonina galectin (Tl-gal) is a galectin-9 homologue protein isolated from an adult worm of the canine gastrointestinal nematode parasite, and Tl-gal-vaccinated challenge can inhibit inflammation in inflammatory bowel disease-induced mice. We determined the first X-ray structures of full-length Tl-gal complexes with carbohydrates (lactose, N-acetyllactosamine, lacto-N-tetraose, sialyllactose, and glucose). Bonds were formed on concave surfaces of both carbohydrate recognition domains (CRDs) in Tl-gal. All binding sites were found in the HXXXR and WGXEER motifs. Charged Arg61/Arg196 and Glu80/Glu215 on the conserved motif of Tl-gal N-terminal CRD and C-terminal CRD are critical amino acids for recognizing carbohydrate binding, and the residues can affect protein folding and structure. The polar amino acids His, Asn, and Trp are also important residues for the interaction with carbohydrates through hydrogen bonding. Hemagglutination activities of Tl-gal were inhibited by interactions with carbohydrates and mutations. We found that the mutation of Tl-gal (E80A/E215A) at the carbohydrate binding region induced protein aggregation and could be caused in many diseases. The short linker region between the N-terminal and C-terminal CRDs of Tl-gal was very stable against proteolysis and maintained its biological activity. This structural information is expected to elucidate the carbohydrate recognition mechanism of Tl-gal and improve our understanding of anti-inflammatory mediators and modulators of immune response.
Structural Basis for Carbohydrate Recognition and Anti-inflammatory Modulation by Gastrointestinal Nematode Parasite Toxascaris leonina Galectin.,Hwang EY, Jeong MS, Park SK, Ha SC, Yu HS, Jang SB J Biol Chem. 2016 Dec 2;291(49):25326-25338. Epub 2016 Oct 14. PMID:27742836[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Hwang EY, Jeong MS, Park SK, Ha SC, Yu HS, Jang SB. Structural Basis for Carbohydrate Recognition and Anti-inflammatory Modulation by Gastrointestinal Nematode Parasite Toxascaris leonina Galectin. J Biol Chem. 2016 Dec 2;291(49):25326-25338. Epub 2016 Oct 14. PMID:27742836 doi:http://dx.doi.org/10.1074/jbc.M116.743773
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