1iqb: Difference between revisions
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1iqb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Urtica_dioica Urtica dioica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IQB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1IQB FirstGlance]. <br> | <table><tr><td colspan='2'>[[1iqb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Urtica_dioica Urtica dioica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IQB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1IQB FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>< | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | ||
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr> | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr> | ||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1iqb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1iqb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1iqb RCSB], [http://www.ebi.ac.uk/pdbsum/1iqb PDBsum]</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=1iqb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1iqb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1iqb RCSB], [http://www.ebi.ac.uk/pdbsum/1iqb PDBsum]</span></td></tr> | ||
<table> | </table> | ||
== Function == | |||
[[http://www.uniprot.org/uniprot/AGI_URTDI AGI_URTDI]] Functions both as a chitinase and as a N-acetyl-D-glucosamine binding lectin. Inhibits the growth of several phytopathogenic chitin-containing fungi. Possesses also insecticidal activity and superantigenic properties.<ref>PMID:10873861</ref> | |||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Urtica dioica]] | [[Category: Urtica dioica]] | ||
[[Category: Harata, K | [[Category: Harata, K]] | ||
[[Category: Muraki, M | [[Category: Muraki, M]] | ||
[[Category: Schubert, W D | [[Category: Schubert, W D]] | ||
[[Category: Homo-dimer]] | [[Category: Homo-dimer]] | ||
[[Category: Sugar binding protein]] | [[Category: Sugar binding protein]] | ||
[[Category: Two homologous hevein-like domain]] | [[Category: Two homologous hevein-like domain]] | ||
[[Category: Zinc complex]] | [[Category: Zinc complex]] | ||
Revision as of 18:24, 24 December 2014
Crystal Structure of Urtica dioica Agglutinin Isolectin ICrystal Structure of Urtica dioica Agglutinin Isolectin I
Structural highlights
Function[AGI_URTDI] Functions both as a chitinase and as a N-acetyl-D-glucosamine binding lectin. Inhibits the growth of several phytopathogenic chitin-containing fungi. Possesses also insecticidal activity and superantigenic properties.[1] 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 PubMedUltica dioica agglutinin, a plant lectin from the stinging nettle, consists of a total of seven individual isolectins. One of these structures, isolectin I, was determined at 1.9 A resolution by the X-ray method. The crystals belong to the space group P2(1) and the asymmetric unit contains two molecules related by local twofold symmetry. The molecule consists of two hevein-like chitin-binding domains lacking distinct secondary structure, but four disulfide bonds in each domain maintain the tertiary structure. The backbone structure of the two independent molecules is essentially identical and this is similarly true of the sugar-binding sites. In the crystal, the C-terminal domains bind Zn(2+) ions at the sugar-binding site. Owing to their location near a pseudo-twofold axis, the two zinc ions link the two independent molecules in a tail-to-tail arrangement: thus, His47 of molecule 1 and His67 of molecule 2 coordinate the first zinc ion, while the second zinc ion links Asp75 of molecule 1 and His47 of molecule 2. Structure of Urtica dioica agglutinin isolectin I: dimer formation mediated by two zinc ions bound at the sugar-binding site.,Harata K, Schubert WD, Muraki M Acta Crystallogr D Biol Crystallogr. 2001 Nov;57(Pt 11):1513-7. Epub 2001, Oct 25. PMID:11679714[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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