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| | ==The Crystal Structure of Sclerotium rolfsii lectin in complex with N-acetyl-D-galactosamine== | | ==The Crystal Structure of Sclerotium rolfsii lectin in complex with N-acetyl-D-galactosamine== |
| - | <StructureSection load='2ofd' size='340' side='right' caption='[[2ofd]], [[Resolution|resolution]] 1.96Å' scene=''> | + | <StructureSection load='2ofd' size='340' side='right'caption='[[2ofd]], [[Resolution|resolution]] 1.96Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2ofd]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Athelia_rolfsii Athelia rolfsii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2OFD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2OFD FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2ofd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Athelia_rolfsii Athelia rolfsii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2OFD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2OFD FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=NGA:N-ACETYL-D-GALACTOSAMINE'>NGA</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]] 1.96Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=NGA:N-ACETYL-D-GALACTOSAMINE'>NGA</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ofc|2ofc]], [[2ofe|2ofe]]</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=2ofd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ofd OCA], [https://pdbe.org/2ofd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ofd RCSB], [https://www.ebi.ac.uk/pdbsum/2ofd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ofd 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=2ofd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ofd OCA], [http://pdbe.org/2ofd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ofd RCSB], [http://www.ebi.ac.uk/pdbsum/2ofd PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ofd ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Athelia rolfsii]] | | [[Category: Athelia rolfsii]] |
| - | [[Category: Leonidas, D D]] | + | [[Category: Large Structures]] |
| - | [[Category: Oikonomakos, N G]] | + | [[Category: Leonidas DD]] |
| - | [[Category: Zographos, S E]] | + | [[Category: Oikonomakos NG]] |
| - | [[Category: Dual specificity]] | + | [[Category: Zographos SE]] |
| - | [[Category: Lectin]]
| + | |
| - | [[Category: Sugar binding protein]]
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| Structural highlights
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The crystal structure of a novel fungal lectin from Sclerotium rolfsii (SRL) in its free form and in complex with N-acetyl-d-galactosamine (GalNAc) and N-acetyl- d -glucosamine (GlcNAc) has been determined at 1.1 A, 2.0 A, and 1.7 A resolution, respectively. The protein structure is composed of two beta-sheets, which consist of four and six beta-strands, connected by two alpha-helices. Sequence and structural comparisons reveal that SRL is the third member of a newly identified family of fungal lectins, which includes lectins from Agaricus bisporus and Xerocomus chrysenteron that share a high degree of structural similarity and carbohydrate specificity. The data for the free SRL are the highest resolution data for any protein of this family. The crystal structures of the SRL in complex with two carbohydrates, GalNAc and GlcNAc, which differ only in the configuration of a single epimeric hydroxyl group, provide the structural basis for its carbohydrate specificity. SRL has two distinct carbohydrate-binding sites, a primary and a secondary. GalNAc binds at the primary site, whereas GlcNAc binds only at the secondary site. Thus, SRL has the ability to recognize and probably bind at the same time two different carbohydrate structures. Structural comparison to Agaricus bisporus lectin-carbohydrate complexes reveals that the primary site is also able to bind the Thomsen-Friedenreich antigen (Galbeta1-->3GalNAc-alpha- glycan structures) whereas the secondary site cannot. The features of the molecular recognition at the two sites are described in detail.
Structural basis for the carbohydrate recognition of the Sclerotium rolfsii lectin.,Leonidas DD, Swamy BM, Hatzopoulos GN, Gonchigar SJ, Chachadi VB, Inamdar SR, Zographos SE, Oikonomakos NG J Mol Biol. 2007 May 11;368(4):1145-61. Epub 2007 Mar 7. PMID:17391699[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Leonidas DD, Swamy BM, Hatzopoulos GN, Gonchigar SJ, Chachadi VB, Inamdar SR, Zographos SE, Oikonomakos NG. Structural basis for the carbohydrate recognition of the Sclerotium rolfsii lectin. J Mol Biol. 2007 May 11;368(4):1145-61. Epub 2007 Mar 7. PMID:17391699 doi:10.1016/j.jmb.2007.02.092
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