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5duv

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Crystal structure of the human galectin-4 N-terminal carbohydrate recognition domain in complex with lactose

Structural highlights

5duv is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.9Å
Ligands:	, , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

LEG4_HUMAN Galectin that binds lactose and a related range of sugars. May be involved in the assembly of adherens junctions.

Publication Abstract from PubMed

Galectin-4 is a tandem-repeat galectin with two distinct carbohydrate recognition domains (CRD). Galectin-4 is expressed mainly in the alimentary tract and is proposed to function as a lipid raft and adherens junction stabilizer by its glycan cross-linking capacity. Galectin-4 plays divergent roles in cancer and inflammatory conditions, either promoting or inhibiting each disease progression, depending on the specific pathological condition. The study of galectin-4's ligand-binding profile may help decipher its roles under specific conditions. Here we present the X-ray structures of human galectin-4 N-terminal CRD (galectin-4N) bound to different saccharide ligands. Galectin-4's overall fold and its core interactions to lactose are similar to other galectin CRDs. Galectin-4N recognises the sulfate cap of 3'-sulfated glycans by a weak interaction through Arg45 and two water-mediated hydrogen bonds via Trp84 and Asn49. When galectin-4N interacts with the H-antigen mimic, 2'-fucosyllactose, an interaction is formed between the ring oxygen of fucose and Arg45. The extended binding site of galectin-4N may not be well suited to the A/B-antigen determinants, alpha-GalNAc/alpha-Gal, specifically due to clashes with residue Phe47. Overall, galectin-4N favours sulfated glycans whilst galectin-4C prefers blood group determinants. However, the two CRDs of galectin-4 can, to a less extent, recognise each other's ligands.

Structural characterisation of human galectin-4 N-terminal carbohydrate recognition domain in complex with glycerol, lactose, 3'-sulfo-lactose, and 2'-fucosyllactose.,Bum-Erdene K, Leffler H, Nilsson UJ, Blanchard H Sci Rep. 2016 Feb 1;6:20289. doi: 10.1038/srep20289. PMID:26828567^[1]

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

References

↑ Bum-Erdene K, Leffler H, Nilsson UJ, Blanchard H. Structural characterisation of human galectin-4 N-terminal carbohydrate recognition domain in complex with glycerol, lactose, 3'-sulfo-lactose, and 2'-fucosyllactose. Sci Rep. 2016 Feb 1;6:20289. doi: 10.1038/srep20289. PMID:26828567 doi:http://dx.doi.org/10.1038/srep20289

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5duv"

Categories: Homo sapiens | Large Structures | Blanchard H | Bum-Erdene K

@@ Line 1: / Line 1: @@
 ==Crystal structure of the human galectin-4 N-terminal carbohydrate recognition domain in complex with lactose==
-<StructureSection load='5duv' size='340' side='right' caption='[[5duv]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
+<StructureSection load='5duv' size='340' side='right'caption='[[5duv]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5duv]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5DUV OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5DUV FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5duv]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5DUV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5DUV 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=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=LAT:BETA-LACTOSE'>LAT</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]] 1.9&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5duu|5duu]], [[5duw|5duw]], [[5dux|5dux]]</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=PRD_900004:beta-lactose'>PRD_900004</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=5duv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5duv OCA], [http://pdbe.org/5duv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5duv RCSB], [http://www.ebi.ac.uk/pdbsum/5duv PDBsum]</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=5duv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5duv OCA], [https://pdbe.org/5duv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5duv RCSB], [https://www.ebi.ac.uk/pdbsum/5duv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5duv ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/LEG4_HUMAN LEG4_HUMAN]] Galectin that binds lactose and a related range of sugars. May be involved in the assembly of adherens junctions.
+[https://www.uniprot.org/uniprot/LEG4_HUMAN LEG4_HUMAN] Galectin that binds lactose and a related range of sugars. May be involved in the assembly of adherens junctions.
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 19: / Line 19: @@
 </div>
 <div class="pdbe-citations 5duv" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Galectin 3D structures|Galectin 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Blanchard, H]]
+[[Category: Homo sapiens]]
-[[Category: Bum-Erdene, K]]
+[[Category: Large Structures]]
-[[Category: Galectin-4]]
+[[Category: Blanchard H]]
-[[Category: Lactose]]
+[[Category: Bum-Erdene K]]
-[[Category: Lectin]]
-[[Category: Sugar binding protein]]
-[[Category: Sugar-binding protein]]

5duv

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Current revision

Crystal structure of the human galectin-4 N-terminal carbohydrate recognition domain in complex with lactose

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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