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1fq9

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[[Image:1fq9.jpg|left|200px]]<br /><applet load="1fq9" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1fq9, resolution 3.0&Aring;" />
 
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'''CRYSTAL STRUCTURE OF A TERNARY FGF2-FGFR1-HEPARIN COMPLEX'''<br />
 
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==Overview==
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==CRYSTAL STRUCTURE OF A TERNARY FGF2-FGFR1-HEPARIN COMPLEX==
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The crystal structure of a dimeric 2:2:2 FGF:FGFR:heparin ternary complex, at 3 A resolution has been determined. Within each 1:1 FGF:FGFR complex, heparin makes numerous contacts with both FGF and FGFR, thereby augmenting, FGF-FGFR binding. Heparin also interacts with FGFR in the adjoining 1:1, FGF:FGFR complex to promote FGFR dimerization. The 6-O-sulfate group of, heparin plays a pivotal role in mediating both interactions. The, unexpected stoichiometry of heparin binding in the structure led us to, propose a revised model for FGFR dimerization. Biochemical data in support, of this model are also presented. This model provides a structural basis, for FGFR activation by small molecule heparin analogs and may facilitate, the design of heparin mimetics capable of modulating FGF signaling.
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<StructureSection load='1fq9' size='340' side='right'caption='[[1fq9]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1fq9]] 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=1FQ9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FQ9 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IDS:2-O-SULFO-ALPHA-L-IDOPYRANURONIC+ACID'>IDS</scene>, <scene name='pdbligand=IDU:2-O-SULFO-BETA-L-ALTROPYRANURONIC+ACID'>IDU</scene>, <scene name='pdbligand=SGN:N,O6-DISULFO-GLUCOSAMINE'>SGN</scene>, <scene name='pdbligand=UAP:4-DEOXY-2-O-SULFO-ALPHA-L-THREO-HEX-4-ENOPYRANURONIC+ACID'>UAP</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1fq9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fq9 OCA], [https://pdbe.org/1fq9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fq9 RCSB], [https://www.ebi.ac.uk/pdbsum/1fq9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fq9 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/FGF2_HUMAN FGF2_HUMAN] Plays an important role in the regulation of cell survival, cell division, angiogenesis, cell differentiation and cell migration. Functions as potent mitogen in vitro.<ref>PMID:1721615</ref> <ref>PMID:8663044</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fq/1fq9_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1fq9 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The crystal structure of a dimeric 2:2:2 FGF:FGFR:heparin ternary complex at 3 A resolution has been determined. Within each 1:1 FGF:FGFR complex, heparin makes numerous contacts with both FGF and FGFR, thereby augmenting FGF-FGFR binding. Heparin also interacts with FGFR in the adjoining 1:1 FGF:FGFR complex to promote FGFR dimerization. The 6-O-sulfate group of heparin plays a pivotal role in mediating both interactions. The unexpected stoichiometry of heparin binding in the structure led us to propose a revised model for FGFR dimerization. Biochemical data in support of this model are also presented. This model provides a structural basis for FGFR activation by small molecule heparin analogs and may facilitate the design of heparin mimetics capable of modulating FGF signaling.
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==Disease==
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Crystal structure of a ternary FGF-FGFR-heparin complex reveals a dual role for heparin in FGFR binding and dimerization.,Schlessinger J, Plotnikov AN, Ibrahimi OA, Eliseenkova AV, Yeh BK, Yayon A, Linhardt RJ, Mohammadi M Mol Cell. 2000 Sep;6(3):743-50. PMID:11030354<ref>PMID:11030354</ref>
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Known diseases associated with this structure: Atopic dermatitis, susceptibility to OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=135940 135940]], Hypophosphatemic rickets, autosomal dominant OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=605380 605380]], Ichthyosis vulgaris OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=135940 135940]], Jackson-Weiss syndrome OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=136350 136350]], Kallmann syndrome 2 OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=136350 136350]], Osteomalacia, tumor-induced OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=605380 605380]], Pfeiffer syndrome OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=136350 136350]], Tumoral calcinosis, hyperphosphatemic, familial OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=605380 605380]]
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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1FQ9 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FQ9 OCA].
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</div>
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<div class="pdbe-citations 1fq9" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Crystal structure of a ternary FGF-FGFR-heparin complex reveals a dual role for heparin in FGFR binding and dimerization., Schlessinger J, Plotnikov AN, Ibrahimi OA, Eliseenkova AV, Yeh BK, Yayon A, Linhardt RJ, Mohammadi M, Mol Cell. 2000 Sep;6(3):743-50. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11030354 11030354]
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*[[Fibroblast growth factor 3D structures|Fibroblast growth factor 3D structures]]
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*[[Fibroblast growth factor receptor 3D receptor|Fibroblast growth factor receptor 3D receptor]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Protein complex]]
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[[Category: Large Structures]]
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[[Category: Eliseenkova, A.V.]]
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[[Category: Eliseenkova AV]]
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[[Category: Ibrahimi, O.A.]]
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[[Category: Ibrahimi OA]]
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[[Category: Linhardt, R.J.]]
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[[Category: Linhardt RJ]]
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[[Category: Mohammadi, M.]]
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[[Category: Mohammadi M]]
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[[Category: Plotnikov, A.N.]]
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[[Category: Plotnikov AN]]
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[[Category: Schlessinger, J.]]
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[[Category: Schlessinger J]]
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[[Category: Yayon, A.]]
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[[Category: Yayon A]]
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[[Category: Yeh, B.K.]]
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[[Category: Yeh BK]]
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[[Category: b-trefoil fold]]
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[[Category: i-set subgroup within the immunoglobulin superfamily]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri Feb 15 15:48:53 2008''
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Current revision

CRYSTAL STRUCTURE OF A TERNARY FGF2-FGFR1-HEPARIN COMPLEX

PDB ID 1fq9

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