1x7s

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{{STRUCTURE_1x7s| PDB=1x7s | SCENE= }}
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==The X-ray crystallographic structure of the amyloidogenic variant TTR Tyr78Phe==
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===The X-ray crystallographic structure of the amyloidogenic variant TTR Tyr78Phe===
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<StructureSection load='1x7s' size='340' side='right' caption='[[1x7s]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
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{{ABSTRACT_PUBMED_15735344}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1x7s]] is a 2 chain structure with sequence 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=1X7S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1X7S FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1x7t|1x7t]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TTR, PALB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1x7s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1x7s OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1x7s RCSB], [http://www.ebi.ac.uk/pdbsum/1x7s PDBsum]</span></td></tr>
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<table>
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== Disease ==
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[[http://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN]] Defects in TTR are the cause of amyloidosis transthyretin-related (AMYL-TTR) [MIM:[http://omim.org/entry/105210 105210]]. A hereditary generalized amyloidosis due to transthyretin amyloid deposition. Protein fibrils can form in different tissues leading to amyloid polyneuropathies, amyloidotic cardiomyopathy, carpal tunnel syndrome, systemic senile amyloidosis. The disease includes leptomeningeal amyloidosis that is characterized by primary involvement of the central nervous system. Neuropathologic examination shows amyloid in the walls of leptomeningeal vessels, in pia arachnoid, and subpial deposits. Some patients also develop vitreous amyloid deposition that leads to visual impairment (oculoleptomeningeal amyloidosis). Clinical features include seizures, stroke-like episodes, dementia, psychomotor deterioration, variable amyloid deposition in the vitreous humor.<ref>PMID:11243784</ref> <ref>PMID:15735344</ref> <ref>PMID:19167329</ref> <ref>PMID:3818577</ref> <ref>PMID:3022108</ref> <ref>PMID:6651852</ref> <ref>PMID:6583672</ref> <ref>PMID:3135807</ref> <ref>PMID:1517749</ref> <ref>PMID:1932142</ref> <ref>PMID:7923855</ref> <ref>PMID:8382610</ref> <ref>PMID:8428915</ref> <ref>PMID:9733771</ref> <ref>PMID:12403615</ref> <ref>PMID:16185074</ref> <ref>PMID:16627944</ref> <ref>PMID:6487335</ref> <ref>PMID:3722385</ref> <ref>PMID:2891727</ref> <ref>PMID:2161654</ref> <ref>PMID:2363717</ref> <ref>PMID:1656975</ref> <ref>PMID:2046936</ref> <ref>PMID:1570831</ref> <ref>PMID:1734866</ref> <ref>PMID:1520326</ref> <ref>PMID:1520336</ref> <ref>PMID:1544214</ref> <ref>PMID:1351039</ref> <ref>PMID:1301926</ref> <ref>PMID:1362222</ref> <ref>PMID:1436517</ref> <ref>PMID:8352764</ref> <ref>PMID:8038017</ref> <ref>PMID:8257997</ref> <ref>PMID:8095302</ref> <ref>PMID:1997217</ref> <ref>PMID:8019560</ref> <ref>PMID:8081397</ref> <ref>PMID:7914929</ref> <ref>PMID:8133316</ref> <ref>PMID:7910950</ref> <ref>PMID:7655883</ref> <ref>PMID:7850982</ref> <ref>PMID:8579098</ref> <ref>PMID:9066351</ref> <ref>PMID:8990019</ref> <ref>PMID:9605286</ref> <ref>PMID:10036587</ref> <ref>PMID:10627135</ref> <ref>PMID:10694917</ref> <ref>PMID:10211412</ref> <ref>PMID:10439117</ref> <ref>PMID:10611950</ref> <ref>PMID:10071047</ref> <ref>PMID:10436378</ref> <ref>PMID:10842705</ref> <ref>PMID:10842718</ref> <ref>PMID:10882995</ref> <ref>PMID:11445644</ref> <ref>PMID:12557757</ref> <ref>PMID:11866053</ref> <ref>PMID:12050338</ref> <ref>PMID:12771253</ref> <ref>PMID:15214015</ref> <ref>PMID:15478468</ref> <ref>PMID:15217993</ref> <ref>PMID:17453626</ref> <ref>PMID:17577687</ref> <ref>PMID:17503405</ref> <ref>PMID:17635579</ref> Defects in TTR are a cause of hyperthyroxinemia dystransthyretinemic euthyroidal (HTDE) [MIM:[http://omim.org/entry/145680 145680]]. It is a condition characterized by elevation of total and free thyroxine in healthy, euthyroid persons without detectable binding protein abnormalities.<ref>PMID:1979335</ref> Defects in TTR are a cause of carpal tunnel syndrome type 1 (CTS1) [MIM:[http://omim.org/entry/115430 115430]]. It is a condition characterized by entrapment of the median nerve within the carpal tunnel. Symptoms include burning pain and paresthesias involving the ventral surface of the hand and fingers which may radiate proximally. Impairment of sensation in the distribution of the median nerve and thenar muscle atrophy may occur. This condition may be associated with repetitive occupational trauma, wrist injuries, amyloid neuropathies, rheumatoid arthritis.<ref>PMID:8309582</ref>
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== Function ==
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[[http://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN]] Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.<ref>PMID:3714052</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/x7/1x7s_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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/chain_selection.php?pdb_ID=2ata 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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Transthyretin (TTR) is a homotetrameric plasma protein that, as a result of a set of not yet fully characterized conformational changes, forms fibrillar aggregates that are the major protein component of amyloid deposits. More than 80 mutations associated with TTR amyloid deposition have been described in the literature. X-ray crystallography was used to elucidate the three-dimensional structure of two important TTR variants: TTR Y78F, an amyloidogenic protein, and TTR R104H, which is associated with a protective effect over the amyloidogenic V30M mutation. The structures of those two TTR variants have been determined in space group P2(1)2(1)2 to 1.55 and 1.60 angstroms resolution, respectively, using molecular-replacement techniques. Detailed analysis of the protein model for TTR Y78F indicates a destabilization of the contacts between the alpha-helix and AB loop and the body of the molecule, intimately related to the amyloidogenic nature; contrastingly, in the TTR R104H variant new contacts involving the N-terminal region and His104 are clearly antagonists of amyloid formation.
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==Disease==
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X-ray crystallographic studies of two transthyretin variants: further insights into amyloidogenesis.,Neto-Silva RM, Macedo-Ribeiro S, Pereira PJ, Coll M, Saraiva MJ, Damas AM Acta Crystallogr D Biol Crystallogr. 2005 Mar;61(Pt 3):333-9. Epub 2005, Feb 24. PMID:15735344<ref>PMID:15735344</ref>
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[[http://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN]] Defects in TTR are the cause of amyloidosis transthyretin-related (AMYL-TTR) [MIM:[http://omim.org/entry/105210 105210]]. A hereditary generalized amyloidosis due to transthyretin amyloid deposition. Protein fibrils can form in different tissues leading to amyloid polyneuropathies, amyloidotic cardiomyopathy, carpal tunnel syndrome, systemic senile amyloidosis. The disease includes leptomeningeal amyloidosis that is characterized by primary involvement of the central nervous system. Neuropathologic examination shows amyloid in the walls of leptomeningeal vessels, in pia arachnoid, and subpial deposits. Some patients also develop vitreous amyloid deposition that leads to visual impairment (oculoleptomeningeal amyloidosis). Clinical features include seizures, stroke-like episodes, dementia, psychomotor deterioration, variable amyloid deposition in the vitreous humor.<ref>PMID:11243784</ref><ref>PMID:15735344</ref><ref>PMID:19167329</ref><ref>PMID:3818577</ref><ref>PMID:3022108</ref><ref>PMID:6651852</ref><ref>PMID:6583672</ref><ref>PMID:3135807</ref><ref>PMID:1517749</ref><ref>PMID:1932142</ref><ref>PMID:7923855</ref><ref>PMID:8382610</ref><ref>PMID:8428915</ref><ref>PMID:9733771</ref><ref>PMID:12403615</ref><ref>PMID:16185074</ref><ref>PMID:16627944</ref><ref>PMID:6487335</ref><ref>PMID:3722385</ref><ref>PMID:2891727</ref><ref>PMID:2161654</ref><ref>PMID:2363717</ref><ref>PMID:1656975</ref><ref>PMID:2046936</ref><ref>PMID:1570831</ref><ref>PMID:1734866</ref><ref>PMID:1520326</ref><ref>PMID:1520336</ref><ref>PMID:1544214</ref><ref>PMID:1351039</ref><ref>PMID:1301926</ref><ref>PMID:1362222</ref><ref>PMID:1436517</ref><ref>PMID:8352764</ref><ref>PMID:8038017</ref><ref>PMID:8257997</ref><ref>PMID:8095302</ref><ref>PMID:1997217</ref><ref>PMID:8019560</ref><ref>PMID:8081397</ref><ref>PMID:7914929</ref><ref>PMID:8133316</ref><ref>PMID:7910950</ref><ref>PMID:7655883</ref><ref>PMID:7850982</ref><ref>PMID:8579098</ref><ref>PMID:9066351</ref><ref>PMID:8990019</ref><ref>PMID:9605286</ref><ref>PMID:10036587</ref><ref>PMID:10627135</ref><ref>PMID:10694917</ref><ref>PMID:10211412</ref><ref>PMID:10439117</ref><ref>PMID:10611950</ref><ref>PMID:10071047</ref><ref>PMID:10436378</ref><ref>PMID:10842705</ref><ref>PMID:10842718</ref><ref>PMID:10882995</ref><ref>PMID:11445644</ref><ref>PMID:12557757</ref><ref>PMID:11866053</ref><ref>PMID:12050338</ref><ref>PMID:12771253</ref><ref>PMID:15214015</ref><ref>PMID:15478468</ref><ref>PMID:15217993</ref><ref>PMID:17453626</ref><ref>PMID:17577687</ref><ref>PMID:17503405</ref><ref>PMID:17635579</ref> Defects in TTR are a cause of hyperthyroxinemia dystransthyretinemic euthyroidal (HTDE) [MIM:[http://omim.org/entry/145680 145680]]. It is a condition characterized by elevation of total and free thyroxine in healthy, euthyroid persons without detectable binding protein abnormalities.<ref>PMID:1979335</ref> Defects in TTR are a cause of carpal tunnel syndrome type 1 (CTS1) [MIM:[http://omim.org/entry/115430 115430]]. It is a condition characterized by entrapment of the median nerve within the carpal tunnel. Symptoms include burning pain and paresthesias involving the ventral surface of the hand and fingers which may radiate proximally. Impairment of sensation in the distribution of the median nerve and thenar muscle atrophy may occur. This condition may be associated with repetitive occupational trauma, wrist injuries, amyloid neuropathies, rheumatoid arthritis.<ref>PMID:8309582</ref>
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==Function==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[http://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN]] Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.<ref>PMID:3714052</ref>
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</div>
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==About this Structure==
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[[1x7s]] is a 2 chain structure with sequence 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=1X7S OCA].
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==See Also==
==See Also==
*[[Transthyretin|Transthyretin]]
*[[Transthyretin|Transthyretin]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:015735344</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Damas, A M.]]
[[Category: Damas, A M.]]

Revision as of 20:08, 29 September 2014

The X-ray crystallographic structure of the amyloidogenic variant TTR Tyr78Phe

1x7s, resolution 1.55Å

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