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3a0k

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Revision as of 16:43, 12 October 2017

Crystal structure of an antiflamatory legume lectin from Cymbosema roseum seeds

Structural highlights

3a0k is a 4 chain structure with sequence from Cymro. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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

Legume lectins, despite high sequence homology, express diverse biological activities that vary in potency and efficacy. In studies reported here, the mannose-specific lectin from Cymbosema roseum (CRLI), which binds N-glycoproteins, shows both pro-inflammatory effects when administered by local injection and anti-inflammatory effects when by systemic injection. Protein sequencing was obtained by Tandem Mass Spectrometry and the crystal structure was solved by X-ray crystallography using a Synchrotron radiation source. Molecular replacement and refinement were performed using CCP4 and the carbohydrate binding properties were described by affinity assays and computational docking. Biological assays were performed in order to evaluate the lectin edematogenic activity. The crystal structure of CRLI was established to a 1.8A resolution in order to determine a structural basis for these differing activities. The structure of CRLI is closely homologous to those of other legume lectins at the monomer level and assembles into tetramers as do many of its homologues. The CRLI carbohydrate binding site was predicted by docking with a specific inhibitory trisaccharide. CRLI possesses a hydrophobic pocket for the binding of alpha-aminobutyric acid and that pocket is occupied in this structure as are the binding sites for calcium and manganese cations characteristic of legume lectins. CRLI route-dependent effects for acute inflammation are related to its carbohydrate binding domain (due to inhibition caused by the presence of alpha-methyl-mannoside), and are based on comparative analysis with ConA crystal structure. This may be due to carbohydrate binding site design, which differs at Tyr12 and Glu205 position.

Structural basis for both pro- and anti-inflammatory response induced by mannose-specific legume lectin from Cymbosema roseum.,Rocha BA, Delatorre P, Oliveira TM, Benevides RG, Pires AF, Sousa AA, Souza LA, Assreuy AM, Debray H, de Azevedo WF Jr, Sampaio AH, Cavada BS Biochimie. 2011 Jan 26. PMID:21277932^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Rocha BA, Delatorre P, Oliveira TM, Benevides RG, Pires AF, Sousa AA, Souza LA, Assreuy AM, Debray H, de Azevedo WF Jr, Sampaio AH, Cavada BS. Structural basis for both pro- and anti-inflammatory response induced by mannose-specific legume lectin from Cymbosema roseum. Biochimie. 2011 Jan 26. PMID:21277932 doi:10.1016/j.biochi.2011.01.006

1 Structural highlights
2 Evolutionary Conservation
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3a0k"

@@ Line 3: / Line 3: @@
 <StructureSection load='3a0k' size='340' side='right' caption='[[3a0k]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3a0k]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Cymbosema_roseum Cymbosema roseum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3A0K OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3A0K FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3a0k]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Cymro Cymro]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3A0K OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3A0K FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ABA:ALPHA-AMINOBUTYRIC+ACID'>ABA</scene>, <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=3a0k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3a0k OCA], [http://pdbe.org/3a0k PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3a0k RCSB], [http://www.ebi.ac.uk/pdbsum/3a0k PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3a0k ProSAT]</span></td></tr>
@@ Line 30: / Line 30: @@
 __TOC__
 </StructureSection>
-[[Category: Cymbosema roseum]]
+[[Category: Cymro]]
 [[Category: Benevides, R G]]
 [[Category: Cavada, B S]]

3a0k

From Proteopedia

Revision as of 16:43, 12 October 2017

Crystal structure of an antiflamatory legume lectin from Cymbosema roseum seeds

Structural highlights

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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