2ds0: Difference between revisions
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==Crystal structure of the earthworm lectin C-terminal domain mutant in complex with 6'-sialyllactose== | ==Crystal structure of the earthworm lectin C-terminal domain mutant in complex with 6'-sialyllactose== | ||
<StructureSection load='2ds0' size='340' side='right' caption='[[2ds0]], [[Resolution|resolution]] 1.80Å' scene=''> | <StructureSection load='2ds0' size='340' side='right'caption='[[2ds0]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2ds0]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[2ds0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Lumbricus_terrestris Lumbricus terrestris]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DS0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2DS0 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=SIA:O-SIALIC+ACID'>SIA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=PRD_900066:6-sialyl-lactose'>PRD_900066</scene>, <scene name='pdbligand=SIA:O-SIALIC+ACID'>SIA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ds0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ds0 OCA], [https://pdbe.org/2ds0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ds0 RCSB], [https://www.ebi.ac.uk/pdbsum/2ds0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ds0 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/O96048_LUMTE O96048_LUMTE] | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Lumbricus terrestris]] | ||
[[Category: | [[Category: Fujimoto Z]] | ||
[[Category: | [[Category: Suzuki R]] | ||
Latest revision as of 13:35, 16 August 2023
Crystal structure of the earthworm lectin C-terminal domain mutant in complex with 6'-sialyllactoseCrystal structure of the earthworm lectin C-terminal domain mutant in complex with 6'-sialyllactose
Structural highlights
FunctionPublication Abstract from PubMedSialic acid (Sia) is a typical terminal sugar, which modifies various types of glycoconjugates commonly found in higher animals. Its regulatory roles in diverse biological phenomena are frequently triggered by interaction with Sia-binding lectins. When using natural Sia-binding lectins as probes, however, there have been practical problems concerning their repertoire and availability. Here, we show a rational creation of a Sia-binding lectin based on the strategy 'natural evolution-mimicry', where Sia-binding lectins are engineered by error-prone PCR from a Gal-binding lectin used as a scaffold protein. After selection with fetuin-agarose using a recently reinforced ribosome display system, one of the evolved mutants SRC showed substantial affinity for alpha2-6Sia, which the parental Gal-binding lectin EW29Ch lacked. SRC was found to have additional practical advantages in productivity and in preservation of affinity for Gal. Thus, the developed novel Sia-recognition protein will contribute as useful tools to sialoglycomics. Tailoring a novel sialic acid-binding lectin from a ricin-B chain-like galactose-binding protein by natural evolution-mimicry.,Yabe R, Suzuki R, Kuno A, Fujimoto Z, Jigami Y, Hirabayashi J J Biochem. 2007 Mar;141(3):389-99. Epub 2007 Jan 18. PMID:17234683[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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