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| ==The crystal structure of novel mammalian lectin Ym1 suggests a saccharide binding site== | | ==The crystal structure of novel mammalian lectin Ym1 suggests a saccharide binding site== |
| <StructureSection load='1e9l' size='340' side='right'caption='[[1e9l]], [[Resolution|resolution]] 2.50Å' scene=''> | | <StructureSection load='1e9l' size='340' side='right'caption='[[1e9l]]' scene=''> |
| == Structural highlights == | | == Structural highlights == |
| <table><tr><td colspan='2'>[[1e9l]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E9L OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1E9L FirstGlance]. <br> | | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E9L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1E9L FirstGlance]. <br> |
| </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GCS:D-GLUCOSAMINE'>GCS</scene></td></tr> | | </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=1e9l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e9l OCA], [https://pdbe.org/1e9l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1e9l RCSB], [https://www.ebi.ac.uk/pdbsum/1e9l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1e9l ProSAT]</span></td></tr> |
| <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1e9l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e9l OCA], [http://pdbe.org/1e9l PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1e9l RCSB], [http://www.ebi.ac.uk/pdbsum/1e9l PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1e9l ProSAT]</span></td></tr> | |
| </table> | | </table> |
| == Function ==
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| [[http://www.uniprot.org/uniprot/CHIL3_MOUSE CHIL3_MOUSE]] Lectin that binds saccharides with a free amino group, such as glucosamine or galactosamine. Binding to oligomeric saccharides is much stronger than binding to mono- or disaccharides. Also binds chitin and heparin. Has weak hexosaminidase activity but no chitinase activity. Has chemotactic activity for T-lymphocytes, bone marrow cells and eosinophils. May play a role in inflammation and allergy.<ref>PMID:10625674</ref> <ref>PMID:11297523</ref> <ref>PMID:11733538</ref>
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| == Evolutionary Conservation == | | == Evolutionary Conservation == |
| [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1e9l ConSurf]. | | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1e9l ConSurf]. |
| <div style="clear:both"></div> | | <div style="clear:both"></div> |
| <div style="background-color:#fffaf0;">
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| == Publication Abstract from PubMed ==
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| Ym1, a secretory protein synthesized by activated murine peritoneal macrophages, is a novel mammalian lectin with a binding specificity to GlcN. Lectins are responsible for carbohydrate recognition and for mediating cell-cell and cell-extracellular matrix interactions in microbes, plants, and animals. Glycosaminoglycan heparin/heparan sulfate binding ability was also detected in Ym1. We report here the three-dimensional structure of Ym1 at 2.5-A resolution by x-ray crystallography. The crystal structure of Ym1 consists of two globular domains, a beta/alpha triose-phosphate isomerase barrel domain and a small alpha + beta folding domain. A notable electron density of sugar is detected in the Ym1 crystal structure. The saccharide is located inside the triose-phosphate isomerase domain at the COOH terminal end of the beta-strands. Both hydrophilic and hydrophobic interactions are noted in the sugar-binding site in Ym1. Despite the fact that Ym1 is not a chitinase, structurally, Ym1 shares significant homology with chitinase A of Serratia marcescens. Ym1 and chitinase A have a similar carbohydrate binding cleft. This study provides new structure information, which will lead to better understanding of the biological significance of Ym1 and its putative gene members.
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| The crystal structure of a novel mammalian lectin, Ym1, suggests a saccharide binding site.,Sun YJ, Chang NC, Hung SI, Chang AC, Chou CC, Hsiao CD J Biol Chem. 2001 May 18;276(20):17507-14. Epub 2001 Feb 15. PMID:11278670<ref>PMID:11278670</ref>
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| From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| </div>
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| <div class="pdbe-citations 1e9l" style="background-color:#fffaf0;"></div>
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| == References ==
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| <references/>
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| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
| [[Category: Mus musculus]]
| | [[Category: Hsiao CD]] |
| [[Category: Hsiao, C D]] | | [[Category: Sun YJ]] |
| [[Category: Sun, Y J]] | |
| [[Category: Inducible]]
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| [[Category: Inflammation]]
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| [[Category: Lectin]]
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| [[Category: Macrophage secretory protein]]
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| [[Category: Secretory]]
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