4uai: Difference between revisions

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==Crystal structure of CXCL12 in complex with inhibitor==
==Crystal structure of CXCL12 in complex with inhibitor==
<StructureSection load='4uai' size='340' side='right' caption='[[4uai]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
<StructureSection load='4uai' size='340' side='right' caption='[[4uai]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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<table><tr><td colspan='2'>[[4uai]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4UAI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4UAI FirstGlance]. <br>
<table><tr><td colspan='2'>[[4uai]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4UAI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4UAI FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=3GG:1-PHENYL-3-[4-(1H-TETRAZOL-5-YL)PHENYL]UREA'>3GG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=3GG:1-PHENYL-3-[4-(1H-TETRAZOL-5-YL)PHENYL]UREA'>3GG</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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4uai FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4uai OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4uai RCSB], [http://www.ebi.ac.uk/pdbsum/4uai 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=4uai FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4uai OCA], [http://pdbe.org/4uai PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4uai RCSB], [http://www.ebi.ac.uk/pdbsum/4uai PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4uai ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 4uai" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>

Revision as of 20:12, 4 August 2016

Crystal structure of CXCL12 in complex with inhibitorCrystal structure of CXCL12 in complex with inhibitor

Structural highlights

4uai is a 2 chain structure. 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

Function

[SDF1_HUMAN] Chemoattractant active on T-lymphocytes, monocytes, but not neutrophils. Activates the C-X-C chemokine receptor CXCR4 to induce a rapid and transient rise in the level of intracellular calcium ions and chemotaxis. Also binds to another C-X-C chemokine receptor CXCR7, which activates the beta-arrestin pathway and acts as a scavenger receptor for SDF-1. SDF-1-beta(3-72) and SDF-1-alpha(3-67) show a reduced chemotactic activity. Binding to cell surface proteoglycans seems to inhibit formation of SDF-1-alpha(3-67) and thus to preserve activity on local sites. Acts as a positive regulator of monocyte migration and a negative regulator of monocyte adhesion via the LYN kinase. Stimulates migration of monocytes and T-lymphocytes through its receptors, CXCR4 and CXCR7, and decreases monocyte adherence to surfaces coated with ICAM-1, a ligand for beta-2 integrins. SDF1A/CXCR4 signaling axis inhibits beta-2 integrin LFA-1 mediated adhesion of monocytes to ICAM-1 through LYN kinase. Inhibits CXCR4-mediated infection by T-cell line-adapted HIV-1. Plays a protective role after myocardial infarction. Induces down-regulation and internalization of CXCR7 expressed in various cells. Has several critical functions during embryonic development; required for B-cell lymphopoiesis, myelopoiesis in bone marrow and heart ventricular septum formation.[1] [2] [3] [4] [5] [6]

Publication Abstract from PubMed

CXCL12 binds to CXCR4, promoting both chemotaxis of lymphocytes and metastasis of cancer cells. We previously identified small molecule ligands that bind CXCL12 and block CXCR4-mediated chemotaxis. We now report a 1.9 Angstrom resolution X-ray structure of CXCL12 bound by such a molecule at a site normally bound by sY21 of CXCR4. The complex structure reveals binding hot spots for future inhibitor design and suggests a new approach to targeting CXCL12-CXCR4 signaling in drug discovery.

Structural analysis of a novel small molecule ligand bound to the CXCL12 chemokine.,Smith E, Liu Y, Getschman AE, Peterson F, Ziarek JJ, Li R, Volkman BF, Chen Y J Med Chem. 2014 Oct 30. PMID:25356720[7]

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

References

  1. ↑ Oberlin E, Amara A, Bachelerie F, Bessia C, Virelizier JL, Arenzana-Seisdedos F, Schwartz O, Heard JM, Clark-Lewis I, Legler DF, Loetscher M, Baggiolini M, Moser B. The CXC chemokine SDF-1 is the ligand for LESTR/fusin and prevents infection by T-cell-line-adapted HIV-1. Nature. 1996 Aug 29;382(6594):833-5. PMID:8752281 doi:10.1038/382833a0
  2. ↑ Moepps B, Braun M, Knopfle K, Dillinger K, Knochel W, Gierschik P. Characterization of a Xenopus laevis CXC chemokine receptor 4: implications for hematopoietic cell development in the vertebrate embryo. Eur J Immunol. 2000 Oct;30(10):2924-34. PMID:11069075
  3. ↑ Braun M, Wunderlin M, Spieth K, Knochel W, Gierschik P, Moepps B. Xenopus laevis Stromal cell-derived factor 1: conservation of structure and function during vertebrate development. J Immunol. 2002 Mar 1;168(5):2340-7. PMID:11859124
  4. ↑ Balabanian K, Lagane B, Infantino S, Chow KY, Harriague J, Moepps B, Arenzana-Seisdedos F, Thelen M, Bachelerie F. The chemokine SDF-1/CXCL12 binds to and signals through the orphan receptor RDC1 in T lymphocytes. J Biol Chem. 2005 Oct 21;280(42):35760-6. Epub 2005 Aug 17. PMID:16107333 doi:M508234200
  5. ↑ Malik M, Chen YY, Kienzle MF, Tomkowicz BE, Collman RG, Ptasznik A. Monocyte migration and LFA-1-mediated attachment to brain microvascular endothelia is regulated by SDF-1 alpha through Lyn kinase. J Immunol. 2008 Oct 1;181(7):4632-7. PMID:18802065
  6. ↑ Kalatskaya I, Berchiche YA, Gravel S, Limberg BJ, Rosenbaum JS, Heveker N. AMD3100 is a CXCR7 ligand with allosteric agonist properties. Mol Pharmacol. 2009 May;75(5):1240-7. doi: 10.1124/mol.108.053389. Epub 2009 Mar , 2. PMID:19255243 doi:10.1124/mol.108.053389
  7. ↑ Smith E, Liu Y, Getschman AE, Peterson F, Ziarek JJ, Li R, Volkman BF, Chen Y. Structural analysis of a novel small molecule ligand bound to the CXCL12 chemokine. J Med Chem. 2014 Oct 30. PMID:25356720 doi:http://dx.doi.org/10.1021/jm501194p

4uai, resolution 1.90Å

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