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- PDB-5fn5: Cryo-EM structure of gamma secretase in class 3 of the apo- state... -
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Basic information
Entry | Database: PDB / ID: 5fn5 | ||||||
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Title | Cryo-EM structure of gamma secretase in class 3 of the apo- state ensemble | ||||||
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![]() | HYDROLASE | ||||||
Function / homology | ![]() Cajal-Retzius cell differentiation / positive regulation of L-glutamate import across plasma membrane / amyloid precursor protein biosynthetic process / positive regulation of coagulation / negative regulation of core promoter binding / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / short-term synaptic potentiation / protein catabolic process at postsynapse / positive regulation of amyloid precursor protein biosynthetic process ...Cajal-Retzius cell differentiation / positive regulation of L-glutamate import across plasma membrane / amyloid precursor protein biosynthetic process / positive regulation of coagulation / negative regulation of core promoter binding / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / short-term synaptic potentiation / protein catabolic process at postsynapse / positive regulation of amyloid precursor protein biosynthetic process / positive regulation of endopeptidase activity / Noncanonical activation of NOTCH3 / sequestering of calcium ion / Notch receptor processing / choline transport / central nervous system myelination / synaptic vesicle targeting / membrane protein intracellular domain proteolysis / negative regulation of axonogenesis / regulation of resting membrane potential / T cell activation involved in immune response / NOTCH4 Activation and Transmission of Signal to the Nucleus / skin morphogenesis / growth factor receptor binding / regulation of synaptic vesicle cycle / dorsal/ventral neural tube patterning / neural retina development / L-glutamate import across plasma membrane / myeloid dendritic cell differentiation / Regulated proteolysis of p75NTR / cerebral cortex cell migration / regulation of phosphorylation / metanephros development / brain morphogenesis / endoplasmic reticulum calcium ion homeostasis / nuclear outer membrane / glutamate receptor signaling pathway / locomotion / amyloid precursor protein metabolic process / smooth endoplasmic reticulum calcium ion homeostasis / regulation of canonical Wnt signaling pathway / astrocyte activation involved in immune response / aggresome / regulation of long-term synaptic potentiation / embryonic limb morphogenesis / skeletal system morphogenesis / cell fate specification / ciliary rootlet / myeloid cell homeostasis / regulation of postsynapse organization / azurophil granule membrane / G protein-coupled dopamine receptor signaling pathway / Hydrolases; Acting on peptide bonds (peptidases); Aspartic endopeptidases / positive regulation of amyloid fibril formation / Golgi cisterna membrane / adult behavior / mitochondrial transport / positive regulation of dendritic spine development / positive regulation of receptor recycling / blood vessel development / regulation of neuron projection development / heart looping / protein glycosylation / amyloid precursor protein catabolic process / amyloid-beta formation / negative regulation of apoptotic signaling pathway / membrane protein ectodomain proteolysis / endopeptidase activator activity / autophagosome assembly / EPH-ephrin mediated repulsion of cells / smooth endoplasmic reticulum / neuron development / hematopoietic progenitor cell differentiation / negative regulation of ubiquitin-dependent protein catabolic process / somitogenesis / calcium ion homeostasis / T cell proliferation / Nuclear signaling by ERBB4 / rough endoplasmic reticulum / epithelial cell proliferation / Notch signaling pathway / regulation of synaptic transmission, glutamatergic / neuron projection maintenance / NOTCH2 Activation and Transmission of Signal to the Nucleus / cellular response to calcium ion / astrocyte activation / NOTCH3 Activation and Transmission of Signal to the Nucleus / Degradation of the extracellular matrix / positive regulation of glycolytic process / NRIF signals cell death from the nucleus / Activated NOTCH1 Transmits Signal to the Nucleus / cerebellum development / post-embryonic development / thymus development / negative regulation of protein phosphorylation / dendritic shaft / PDZ domain binding / apoptotic signaling pathway / cell-cell adhesion / synapse organization Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.3 Å | ||||||
![]() | Bai, X.C. / Rajendra, E. / Yang, G.H. / Shi, Y.G. / Scheres, S.H.W. | ||||||
![]() | ![]() Title: Sampling the conformational space of the catalytic subunit of human γ-secretase. Authors: Xiao-chen Bai / Eeson Rajendra / Guanghui Yang / Yigong Shi / Sjors H W Scheres / ![]() ![]() Abstract: Human γ-secretase is an intra-membrane protease that cleaves many different substrates. Aberrant cleavage of Notch is implicated in cancer, while abnormalities in cutting amyloid precursor protein ...Human γ-secretase is an intra-membrane protease that cleaves many different substrates. Aberrant cleavage of Notch is implicated in cancer, while abnormalities in cutting amyloid precursor protein lead to Alzheimer's disease. Our previous cryo-EM structure of γ-secretase revealed considerable disorder in its catalytic subunit presenilin. Here, we describe an image classification procedure that characterizes molecular plasticity at the secondary structure level, and apply this method to identify three distinct conformations in our previous sample. In one of these conformations, an additional transmembrane helix is visible that cannot be attributed to the known components of γ-secretase. In addition, we present a γ-secretase structure in complex with the dipeptidic inhibitor N-[N-(3,5-difluorophenacetyl)-L-alanyl]-S-phenylglycine t-butyl ester (DAPT). Our results reveal how conformational mobility in the second and sixth transmembrane helices of presenilin is greatly reduced upon binding of DAPT or the additional helix, and form the basis for a new model of how substrate enters the transmembrane domain. | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 237.5 KB | Display | ![]() |
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PDB format | ![]() | 191.2 KB | Display | ![]() |
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-Validation report
Summary document | ![]() | 828.2 KB | Display | ![]() |
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Full document | ![]() | 861.6 KB | Display | |
Data in XML | ![]() | 38.3 KB | Display | |
Data in CIF | ![]() | 59.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 3240MC ![]() 3237C ![]() 3238C ![]() 3239C ![]() 5fn2C ![]() 5fn3C ![]() 5fn4C C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 78483.570 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: A DRUG DAPT WAS BOUND TO GAMMA SECRETASE COMPLEX / Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 52713.535 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: A DRUG DAPT WAS BOUND TO GAMMA SECRETASE COMPLEX / Source: (gene. exp.) ![]() ![]() References: UniProt: P49768, Hydrolases; Acting on peptide bonds (peptidases); Aspartic endopeptidases |
#3: Protein | Mass: 29017.943 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: A DRUG DAPT WAS BOUND TO GAMMA SECRETASE COMPLEX / Source: (gene. exp.) ![]() ![]() |
#4: Protein | Mass: 12038.029 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: A DRUG DAPT WAS BOUND TO GAMMA SECRETASE COMPLEX / Source: (gene. exp.) ![]() ![]() |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: GAMMA SECRETASE / Type: COMPLEX |
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Buffer solution | Name: 25 MM HEPES, PH 7.4, 150 MM NACL AND AMPHIPOL A8-35 / pH: 7.4 Details: 25 MM HEPES, PH 7.4, 150 MM NACL AND AMPHIPOL A8-35 |
Specimen | Conc.: 6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: HOLEY CARBON |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Details: LIQUID ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS / Date: Oct 25, 2014 |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 81000 X / Calibrated magnification: 35714 X / Nominal defocus max: 3200 nm / Nominal defocus min: 700 nm / Cs: 2.7 mm |
Specimen holder | Temperature: 85 K |
Image recording | Electron dose: 38 e/Å2 / Film or detector model: GATAN K2 QUANTUM (4k x 4k) |
Image scans | Num. digital images: 2000 |
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Processing
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||
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3D reconstruction | Resolution: 4.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 66720 / Refinement type: HALF-MAPS REFINED INDEPENDENTLY / Symmetry type: POINT | ||||||||||||
Refinement | Highest resolution: 4.3 Å | ||||||||||||
Refinement step | Cycle: LAST / Highest resolution: 4.3 Å
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