4gyx

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==The von Willebrand Factor A3 domain binding region of type III collagen stabilized by the cysteine knot==
==The von Willebrand Factor A3 domain binding region of type III collagen stabilized by the cysteine knot==
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<StructureSection load='4gyx' size='340' side='right' caption='[[4gyx]], [[Resolution|resolution]] 1.49&Aring;' scene=''>
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<StructureSection load='4gyx' size='340' side='right'caption='[[4gyx]], [[Resolution|resolution]] 1.49&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4gyx]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GYX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4GYX FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4gyx]] is a 3 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=4GYX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GYX FirstGlance]. <br>
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</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=HYP:4-HYDROXYPROLINE'>HYP</scene></td></tr>
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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]] 1.49&#8491;</td></tr>
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<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=4gyx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gyx OCA], [http://pdbe.org/4gyx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4gyx RCSB], [http://www.ebi.ac.uk/pdbsum/4gyx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4gyx ProSAT]</span></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=HYP:4-HYDROXYPROLINE'>HYP</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=4gyx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gyx OCA], [https://pdbe.org/4gyx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4gyx RCSB], [https://www.ebi.ac.uk/pdbsum/4gyx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4gyx ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
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== Disease ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/CO3A1_HUMAN CO3A1_HUMAN] Defects in COL3A1 are a cause of Ehlers-Danlos syndrome type 3 (EDS3) [MIM:[https://omim.org/entry/130020 130020]; also known as benign hypermobility syndrome. EDS is a connective tissue disorder characterized by hyperextensible skin, atrophic cutaneous scars due to tissue fragility and joint hyperlaxity. EDS3 is a form of Ehlers-Danlos syndrome characterized by marked joint hyperextensibility without skeletal deformity.<ref>PMID:7833919</ref> Defects in COL3A1 are the cause of Ehlers-Danlos syndrome type 4 (EDS4) [MIM:[https://omim.org/entry/130050 130050]. EDS is a connective tissue disorder characterized by hyperextensible skin, atrophic cutaneous scars due to tissue fragility and joint hyperlaxity. EDS4 is the most severe form of the disease. It is characterized by the joint and dermal manifestations as in other forms of the syndrome, characteristic facial features (acrogeria) in most patients, and by proneness to spontaneous rupture of bowel and large arteries. The vascular complications may affect all anatomical areas.<ref>PMID:1370809</ref> <ref>PMID:8411057</ref> <ref>PMID:2492273</ref> <ref>PMID:7749417</ref> <ref>PMID:1352273</ref> <ref>PMID:2808425</ref> <ref>PMID:1895316</ref> <ref>PMID:1357232</ref> <ref>PMID:1496983</ref> <ref>PMID:8098182</ref> [:]<ref>PMID:7912131</ref> <ref>PMID:8019562</ref> [:]<ref>PMID:8680408</ref> <ref>PMID:8884076</ref> <ref>PMID:9147870</ref> <ref>PMID:8664902</ref> <ref>PMID:8990011</ref> <ref>PMID:9036918</ref> <ref>PMID:9452103</ref> <ref>PMID:10923041</ref> <ref>PMID:10706896</ref> <ref>PMID:11168790</ref> <ref>PMID:12694234</ref> <ref>PMID:12786757</ref> Defects in COL3A1 are a cause of susceptibility to aortic aneurysm abdominal (AAA) [MIM:[https://omim.org/entry/100070 100070]. AAA is a common multifactorial disorder characterized by permanent dilation of the abdominal aorta, usually due to degenerative changes in the aortic wall. Histologically, AAA is characterized by signs of chronic inflammation, destructive remodeling of the extracellular matrix, and depletion of vascular smooth muscle cells.<ref>PMID:8514866</ref> <ref>PMID:2243125</ref> <ref>PMID:2349939</ref>
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Precise mapping and unraveling the mechanism of interaction or degradation of a certain type of collagen triple helix requires the generation of short and stable collagenous fragments. This is a great challenge especially for hetero-trimeric collagens, where chain composition and register (stagger) are important factors. No system has been reported that can be efficiently used to generate a natural collagenous fragment with exact chain composition and desired chain register. The NC2 domain (only 35-50 residues) of FACIT collagens is a potent trimerization domain. In case of type IX collagen it provides the efficient selection and hetero-trimerization of three distinct chains. The ability of the NC2 domain to determine the chain register of the triple helix is studied. We generated three possible sequence combinations (alpha1alpha1alpha2, alpha1alpha2alpha1, alpha2alpha1alpha1) of a type I collagen fragment (the binding region for the von Willebrand factor A3 domain) attached to the NC2 domain. In addition, two control combinations were produced that constitute homo-trimers of (alpha1)3 or (alpha2)3. For the hetero-trimeric constructs, alpha1alpha1alpha2 demonstrated a higher melting temperature than the other two. Binding experiments with the von Willebrand factor A3 domain revealed the homo-trimer of (alpha1)3 as the strongest binding construct, whereas the homo-trimer of (alpha2)3 showed no binding. For hetero-trimers, alpha1alpha1alpha2 was found to be the strongest binding construct. Differences in thermal stability and binding to the A3 domain unambiguously demonstrate that the NC2 domain of type IX collagen determines not only the chain composition but also the chain register of the adjacent triple helix.
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== Function ==
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[https://www.uniprot.org/uniprot/CO3A1_HUMAN CO3A1_HUMAN] Collagen type III occurs in most soft connective tissues along with type I collagen.
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The NC2 domain of type IX collagen determines the chain register of the triple helix.,Boudko SP, Bachinger HP J Biol Chem. 2012 Nov 6. PMID:23132862<ref>PMID:23132862</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 4gyx" style="background-color:#fffaf0;"></div>
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== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Bachinger, H P]]
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[[Category: Homo sapiens]]
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[[Category: Boudko, S P]]
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[[Category: Large Structures]]
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[[Category: 4-hydroxylation]]
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[[Category: Bachinger HP]]
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[[Category: Blood clotting]]
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[[Category: Boudko SP]]
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[[Category: Collagen triple helix]]
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[[Category: Extracellular matrix]]
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[[Category: Structural protein]]
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[[Category: Type iii collagen cysteine knot]]
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[[Category: Von willebrand factor a3 domain]]
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Current revision

The von Willebrand Factor A3 domain binding region of type III collagen stabilized by the cysteine knot

PDB ID 4gyx

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