|
|
| (2 intermediate revisions not shown.) |
| Line 1: |
Line 1: |
| | | | |
| | ==Peanut Lectin with 9mer peptide (IWSSAGNVA)== | | ==Peanut Lectin with 9mer peptide (IWSSAGNVA)== |
| - | <StructureSection load='1v6m' size='340' side='right' caption='[[1v6m]], [[Resolution|resolution]] 2.70Å' scene=''> | + | <StructureSection load='1v6m' size='340' side='right'caption='[[1v6m]], [[Resolution|resolution]] 2.70Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1v6m]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Arachis_hypogaea Arachis hypogaea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V6M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1V6M FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1v6m]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Arachis_hypogaea Arachis hypogaea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V6M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1V6M FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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]] 2.7Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1cr7|1cr7]], [[1v6i|1v6i]], [[1v6j|1v6j]], [[1v6k|1v6k]], [[1v6l|1v6l]], [[1v6n|1v6n]], [[1v6o|1v6o]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></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=1v6m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1v6m OCA], [http://pdbe.org/1v6m PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1v6m RCSB], [http://www.ebi.ac.uk/pdbsum/1v6m PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1v6m 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=1v6m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1v6m OCA], [https://pdbe.org/1v6m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1v6m RCSB], [https://www.ebi.ac.uk/pdbsum/1v6m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1v6m ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/LECG_ARAHY LECG_ARAHY]] D-galactose specific lectin. | + | [https://www.uniprot.org/uniprot/LECG_ARAHY LECG_ARAHY] D-galactose specific lectin. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Line 37: |
Line 37: |
| | </StructureSection> | | </StructureSection> |
| | [[Category: Arachis hypogaea]] | | [[Category: Arachis hypogaea]] |
| - | [[Category: Jeyaprakash, A Arockia]] | + | [[Category: Large Structures]] |
| - | [[Category: Natchiar, S Kundhavai]] | + | [[Category: Arockia Jeyaprakash A]] |
| - | [[Category: Ramya, T N.C]] | + | [[Category: Kundhavai Natchiar S]] |
| - | [[Category: Suguna, K]] | + | [[Category: Ramya TNC]] |
| - | [[Category: Surolia, A]] | + | [[Category: Suguna K]] |
| - | [[Category: Thomas, C J]] | + | [[Category: Surolia A]] |
| - | [[Category: Vijayan, M]] | + | [[Category: Thomas CJ]] |
| - | [[Category: Agglutinin]]
| + | [[Category: Vijayan M]] |
| - | [[Category: Lectin]]
| + | |
| - | [[Category: Open quaternary association and monoclinic]]
| + | |
| - | [[Category: Sugar binding protein]]
| + | |
| Structural highlights
Function
LECG_ARAHY D-galactose specific lectin.
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
Until recently, it has only been possible to grow crystals of peanut lectin when complexed with sugar ligands. It is now shown that it is possible to grow peanut lectin crystals at acidic pH in the presence of oligopeptides corresponding to a loop in the lectin molecule. Crystals have also been prepared in the presence of these peptides as well as lactose. Low-pH crystal forms of the lectin-lactose complex similar to those obtained at neutral pH have also been grown. Thus, crystals of peanut lectin grown under different environmental conditions, at two pH values with and without sugar bound to the lectin, are now available. They have been used to explore the plasticity and hydration of the molecule. A detailed comparison between different structures shows that the lectin molecule is sturdy and that the effect of changes in pH, ligand binding and environment on it is small. The region involving the curved front beta-sheet and the loops around the second hydrophobic core is comparatively rigid. The back beta-sheet involved in quaternary association, which exhibits considerable variability, is substantially flexible, as is the sugar-binding region. The numbers of invariant water molecules in the hydration shell are small and they are mainly involved in metal coordination or in stabilizing unusual structural features. Small consistent movements occur in the combining site upon sugar binding, although the site is essentially preformed.
Structural plasticity of peanut lectin: an X-ray analysis involving variation in pH, ligand binding and crystal structure.,Kundhavai Natchiar S, Arockia Jeyaprakash A, Ramya TN, Thomas CJ, Suguna K, Surolia A, Vijayan M Acta Crystallogr D Biol Crystallogr. 2004 Feb;60(Pt 2):211-9. Epub 2004, Jan 23. PMID:14747696[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Kundhavai Natchiar S, Arockia Jeyaprakash A, Ramya TN, Thomas CJ, Suguna K, Surolia A, Vijayan M. Structural plasticity of peanut lectin: an X-ray analysis involving variation in pH, ligand binding and crystal structure. Acta Crystallogr D Biol Crystallogr. 2004 Feb;60(Pt 2):211-9. Epub 2004, Jan 23. PMID:14747696 doi:http://dx.doi.org/10.1107/S090744490302849X
|
