5a63
From Proteopedia
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==Cryo-EM structure of the human gamma-secretase complex at 3.4 angstrom resolution.== | ==Cryo-EM structure of the human gamma-secretase complex at 3.4 angstrom resolution.== | ||
- | < | + | <SX load='5a63' size='340' side='right' viewer='molstar' caption='[[5a63]], [[Resolution|resolution]] 3.40Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
- | <table><tr><td colspan='2'>[[5a63]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5A63 OCA]. For a <b>guided tour on the structure components</b> use [ | + | <table><tr><td colspan='2'>[[5a63]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=4upc 4upc]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5A63 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5A63 FirstGlance]. <br> |
- | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PC1:1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE'>PC1</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PC1:1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE'>PC1</scene></td></tr> |
- | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5a63 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5a63 OCA], [https://pdbe.org/5a63 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5a63 RCSB], [https://www.ebi.ac.uk/pdbsum/5a63 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5a63 ProSAT]</span></td></tr> |
</table> | </table> | ||
- | == Disease == | ||
- | [[http://www.uniprot.org/uniprot/PEN2_HUMAN PEN2_HUMAN]] Hidradenitis suppurativa. The disease is caused by mutations affecting the gene represented in this entry. [[http://www.uniprot.org/uniprot/NICA_HUMAN NICA_HUMAN]] Hidradenitis suppurativa. The disease is caused by mutations affecting the gene represented in this entry. [[http://www.uniprot.org/uniprot/PSN1_HUMAN PSN1_HUMAN]] Defects in PSEN1 are a cause of Alzheimer disease type 3 (AD3) [MIM:[http://omim.org/entry/607822 607822]]. AD3 is a familial early-onset form of Alzheimer disease. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:12058025</ref> <ref>PMID:7596406</ref> <ref>PMID:8634711</ref> <ref>PMID:8634712</ref> <ref>PMID:7651536</ref> <ref>PMID:7550356</ref> <ref>PMID:8733303</ref> <ref>PMID:9225696</ref> <ref>PMID:9298817</ref> <ref>PMID:9172170</ref> <ref>PMID:9833068</ref> <ref>PMID:9384602</ref> <ref>PMID:9521423</ref> <ref>PMID:10200054</ref> <ref>PMID:9719376</ref> <ref>PMID:9507958</ref> <ref>PMID:9831473</ref> <ref>PMID:10441572</ref> <ref>PMID:10090481</ref> <ref>PMID:10447269</ref> <ref>PMID:10533070</ref> <ref>PMID:10025789</ref> <ref>PMID:10208579</ref> <ref>PMID:10439444</ref> <ref>PMID:10631141</ref> <ref>PMID:10644793</ref> <ref>PMID:11027672</ref> [:]<ref>PMID:11710891</ref> <ref>PMID:11920851</ref> <ref>PMID:12048239</ref> <ref>PMID:12484344</ref> <ref>PMID:12493737</ref> Defects in PSEN1 are a cause of frontotemporal dementia (FTD) [MIM:[http://omim.org/entry/600274 600274]]. Defects in PSEN1 are the cause of cardiomyopathy dilated type 1U (CMD1U) [MIM:[http://omim.org/entry/613694 613694]]. It is a disorder characterized by ventricular dilation and impaired systolic function, resulting in congestive heart failure and arrhythmia. Patients are at risk of premature death.<ref>PMID:17186461</ref> Defects in PSEN1 are the cause of familial acne inversa type 3 (ACNINV3) [MIM:[http://omim.org/entry/613737 613737]]. A chronic relapsing inflammatory disease of the hair follicles characterized by recurrent draining sinuses, painful skin abscesses, and disfiguring scars. Manifestations typically appear after puberty.<ref>PMID:20929727</ref> | ||
== Function == | == Function == | ||
- | [ | + | [https://www.uniprot.org/uniprot/APH1A_HUMAN APH1A_HUMAN] Essential subunit of the gamma-secretase complex, an endoprotease complex that catalyzes the intramembrane cleavage of integral proteins such as Notch receptors and APP (beta-amyloid precursor protein). It probably represents a stabilizing cofactor for the presenilin homodimer that promotes the formation of a stable complex.<ref>PMID:12297508</ref> <ref>PMID:12522139</ref> <ref>PMID:12763021</ref> |
+ | <div style="background-color:#fffaf0;"> | ||
+ | == Publication Abstract from PubMed == | ||
+ | Dysfunction of the intramembrane protease gamma-secretase is thought to cause Alzheimer's disease, with most mutations derived from Alzheimer's disease mapping to the catalytic subunit presenilin 1 (PS1). Here we report an atomic structure of human gamma-secretase at 3.4 A resolution, determined by single-particle cryo-electron microscopy. Mutations derived from Alzheimer's disease affect residues at two hotspots in PS1, each located at the centre of a distinct four transmembrane segment (TM) bundle. TM2 and, to a lesser extent, TM6 exhibit considerable flexibility, yielding a plastic active site and adaptable surrounding elements. The active site of PS1 is accessible from the convex side of the TM horseshoe, suggesting considerable conformational changes in nicastrin extracellular domain after substrate recruitment. Component protein APH-1 serves as a scaffold, anchoring the lone transmembrane helix from nicastrin and supporting the flexible conformation of PS1. Ordered phospholipids stabilize the complex inside the membrane. Our structure serves as a molecular basis for mechanistic understanding of gamma-secretase function. | ||
+ | |||
+ | An atomic structure of human gamma-secretase.,Bai XC, Yan C, Yang G, Lu P, Ma D, Sun L, Zhou R, Scheres SH, Shi Y Nature. 2015 Aug 17. doi: 10.1038/nature14892. PMID:26280335<ref>PMID:26280335</ref> | ||
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+ | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
+ | </div> | ||
+ | <div class="pdbe-citations 5a63" style="background-color:#fffaf0;"></div> | ||
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+ | ==See Also== | ||
+ | *[[Gamma secretase|Gamma secretase]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
- | </ | + | </SX> |
- | [[Category: Bai | + | [[Category: Homo sapiens]] |
- | [[Category: Lu | + | [[Category: Large Structures]] |
- | [[Category: Ma | + | [[Category: Bai X]] |
- | [[Category: Scheres | + | [[Category: Lu P]] |
- | [[Category: Shi | + | [[Category: Ma D]] |
- | [[Category: Sun | + | [[Category: Scheres SHW]] |
- | [[Category: Yan | + | [[Category: Shi Y]] |
- | [[Category: Yang | + | [[Category: Sun L]] |
- | [[Category: Zhou | + | [[Category: Yan C]] |
- | + | [[Category: Yang G]] | |
- | + | [[Category: Zhou R]] | |
- | + | ||
- | + |
Current revision
Cryo-EM structure of the human gamma-secretase complex at 3.4 angstrom resolution.
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Categories: Homo sapiens | Large Structures | Bai X | Lu P | Ma D | Scheres SHW | Shi Y | Sun L | Yan C | Yang G | Zhou R