This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

3nv2

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 08:07, 4 November 2020

Crystal structure of human galectin-9 C-terminal CRD in complex with N-acetyllactosamine

Structural highlights

3nv2 is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	3nv1, 3nv3, 3nv4
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LEG9_HUMAN] Binds galactosides. Has high affinity for the Forssman pentasaccharide. May play a role in thymocyte-epithelial interactions relevant to the biology of the thymus. Inhibits cell proliferation. It is a ligand for HAVCR2/TIM3. Induces T-helper type 1 lymphocyte (Th1) death. Isoform Short acts as an eosinophil chemoattractant.^[1] ^[2] ^[3]

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

Galectin-9, a tandem-repeat-type beta-galactoside-specific animal lectin with two carbohydrate recognition domains (CRDs) at the N- and C-terminal ends, is involved in chemoattraction, apoptosis, and the regulation of cell differentiation and has anti-allergic effects. Its ability to recognize carbohydrates is essential for its biological functions. Human galectin-9 (hG9) has high affinity for branched N-glycan-type oligosaccharides (dissociation constants of 0.16-0.70 mum) and linear beta1-3-linked poly-N-acetyllactosamines (0.09-8.3 mum) and significant affinity for the alpha2-3-sialylated oligosaccharides (17-34 mum). Further, its N-terminal CRD (hG9N) and C-terminal CRD (hG9C) differ in specificity. To elucidate this unique feature of hG9, x-ray structures of hG9C in the free form and in complexes with N-acetyllactosamine, the biantennary pyridylaminated oligosaccharide, and alpha2-3-sialyllactose were determined. They are the first x-ray structural analysis of C-terminal CRD of the tandem-repeat-type galectin. The results clearly revealed the mechanism by which branched and alpha2-3-sialylated oligosaccharides are recognized and explained the difference in specificity between hG9N and hG9C. Based on structural comparisons with other galectins, we propose that the wide entrance for ligand binding and the shallow binding site of hG9C are favorable for branched oligosaccharides and that Arg(221) is responsible for recognizing sialylated oligosaccharides.

X-ray Structures of Human Galectin-9 C-terminal Domain in Complexes with a Biantennary Oligosaccharide and Sialyllactose.,Yoshida H, Teraoka M, Nishi N, Nakakita S, Nakamura T, Hirashima M, Kamitori S J Biol Chem. 2010 Nov 19;285(47):36969-76. Epub 2010 Sep 22. PMID:20861009^[4]

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

References

↑ Zhu C, Anderson AC, Schubart A, Xiong H, Imitola J, Khoury SJ, Zheng XX, Strom TB, Kuchroo VK. The Tim-3 ligand galectin-9 negatively regulates T helper type 1 immunity. Nat Immunol. 2005 Dec;6(12):1245-52. Epub 2005 Nov 13. PMID:16286920 doi:http://dx.doi.org/10.1038/ni1271
↑ Nagae M, Nishi N, Nakamura-Tsuruta S, Hirabayashi J, Wakatsuki S, Kato R. Structural analysis of the human galectin-9 N-terminal carbohydrate recognition domain reveals unexpected properties that differ from the mouse orthologue. J Mol Biol. 2008 Jan 4;375(1):119-35. Epub 2007 Sep 26. PMID:18005988 doi:S0022-2836(07)01208-9
↑ Nagae M, Nishi N, Murata T, Usui T, Nakamura T, Wakatsuki S, Kato R. Structural analysis of the recognition mechanism of poly-N-acetyllactosamine by the human galectin-9 N-terminal carbohydrate recognition domain. Glycobiology. 2009 Feb;19(2):112-7. Epub 2008 Oct 31. PMID:18977853 doi:cwn121
↑ Yoshida H, Teraoka M, Nishi N, Nakakita S, Nakamura T, Hirashima M, Kamitori S. X-ray Structures of Human Galectin-9 C-terminal Domain in Complexes with a Biantennary Oligosaccharide and Sialyllactose. J Biol Chem. 2010 Nov 19;285(47):36969-76. Epub 2010 Sep 22. PMID:20861009 doi:10.1074/jbc.M110.163402

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3nv2"

@@ Line 1: / Line 1: @@
 ==Crystal structure of human galectin-9 C-terminal CRD in complex with N-acetyllactosamine==
-<StructureSection load='3nv2' size='340' side='right' caption='[[3nv2]], [[Resolution|resolution]] 2.34&Aring;' scene=''>
+<StructureSection load='3nv2' size='340' side='right'caption='[[3nv2]], [[Resolution|resolution]] 2.34&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3nv2]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NV2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3NV2 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3nv2]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NV2 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=3NV2 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3nv1|3nv1]], [[3nv3|3nv3]], [[3nv4|3nv4]]</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=3nv2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3nv2 OCA], [http://pdbe.org/3nv2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3nv2 RCSB], [http://www.ebi.ac.uk/pdbsum/3nv2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3nv2 ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=3nv2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3nv2 OCA], [http://pdbe.org/3nv2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3nv2 RCSB], [http://www.ebi.ac.uk/pdbsum/3nv2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3nv2 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 31: / Line 31: @@
 ==See Also==
-*[[Galectin|Galectin]]
+*[[Galectin 3D structures|Galectin 3D structures]]
 == References ==
 <references/>
@@ Line 37: / Line 37: @@
 </StructureSection>
 [[Category: Human]]
+[[Category: Large Structures]]
 [[Category: Kamitori, S]]
 [[Category: Yoshida, H]]
 [[Category: Sugar binding]]
 [[Category: Sugar binding protein]]

3nv2

From Proteopedia

Revision as of 08:07, 4 November 2020

Crystal structure of human galectin-9 C-terminal CRD in complex with N-acetyllactosamine

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox