3m3e
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal Structure of Agrocybe aegerita lectin AAL mutant E66A complexed with p-Nitrophenyl Thomsen-Friedenreich disaccharide== | |
| + | <StructureSection load='3m3e' size='340' side='right'caption='[[3m3e]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3m3e]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Cyclocybe_aegerita Cyclocybe aegerita]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3M3E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3M3E FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A2G:N-ACETYL-2-DEOXY-2-AMINO-GALACTOSE'>A2G</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NPO:P-NITROPHENOL'>NPO</scene>, <scene name='pdbligand=PRD_900084:Thomsen-Friedenreich+antigen'>PRD_900084</scene></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=3m3e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3m3e OCA], [https://pdbe.org/3m3e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3m3e RCSB], [https://www.ebi.ac.uk/pdbsum/3m3e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3m3e ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/ATLE_CYCAE ATLE_CYCAE] Anti-tumor lectin with DNase activity. Inhibits the growth of several tumor cell lines in vitro. Induces lymphocyte infiltration and necrosis of tumor cells in a mouse tumor model. Induces apoptosis in HeLa cells. Binds N-acetylneuraminyl lactose (N-acetyl-alpha-neuraminyl-(2->3)-beta-D-galactosyl-(1->4)-beta-D-glucose) (PubMed:16051274).<ref>PMID:12757412</ref> <ref>PMID:16051274</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Thomsen-Friedenreich (TF) antigen, which plays an important role in the regulation of cancer cell proliferation, occurs in approximately 90% of all human cancers and precancerous conditions. Although TF antigen has been known for almost 80 yr as a pancarcinoma antigen, the recognition mechanism between TF antigen and target protein has not been structurally characterized. A number of studies indicated that TF disaccharide is a potential ligand of the galactoside-binding galectins. In this work, we identified the TF antigen as a potential ligand of the antitumor galectin AAL (Agrocybe aegerita lectin) through glycan array analysis and reported the crystal structure of AAL complexed with the TF antigen. The structure provides a first look at the recognition mode between AAL and TF antigen, which is unique in a conservative (Glu-water-Arg-water) structural motif-based hydrogen bond network. Structure-based mutagenesis analysis further revealed the residues responsible for recognition specificity and binding affinity. Crystal structures of AAL complexed with two other TF-containing glycans showed that the unique TF recognition mode is kept intact, which may be commonly adopted in some cancer-related galectins. The finding provided the new target and approach for the antitumor drug design and relative strategy based on the AAL-TF recognition mode as a prototype model. | ||
| - | + | Structural insights into the recognition mechanism between an antitumor galectin AAL and the Thomsen-Friedenreich antigen.,Feng L, Sun H, Zhang Y, Li DF, Wang DC FASEB J. 2010 Oct;24(10):3861-8. Epub 2010 Jun 7. PMID:20530247<ref>PMID:20530247</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 3m3e" style="background-color:#fffaf0;"></div> | |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Cyclocybe aegerita]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Feng L]] | ||
| + | [[Category: Li D]] | ||
| + | [[Category: Wang D]] | ||
Current revision
Crystal Structure of Agrocybe aegerita lectin AAL mutant E66A complexed with p-Nitrophenyl Thomsen-Friedenreich disaccharide
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