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- PDB-5a63: Cryo-EM structure of the human gamma-secretase complex at 3.4 ang... -

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Entry
Database: PDB / ID: 5a63
TitleCryo-EM structure of the human gamma-secretase complex at 3.4 angstrom resolution.
Components
  • (Gamma-secretase subunit ...) x 2
  • Nicastrin
  • Presenilin-1
KeywordsHYDROLASE / CRYO-EM / HUMAN GAMMA-SECRETASE / MEMBRANE PROTEIN
Function / homology
Function and homology information


positive regulation of endopeptidase activity / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / Noncanonical activation of NOTCH3 / protein catabolic process at postsynapse / TGFBR3 PTM regulation / Notch receptor processing / skin morphogenesis / membrane protein intracellular domain proteolysis / NOTCH4 Activation and Transmission of Signal to the Nucleus ...positive regulation of endopeptidase activity / gamma-secretase complex / aspartic endopeptidase activity, intramembrane cleaving / Noncanonical activation of NOTCH3 / protein catabolic process at postsynapse / TGFBR3 PTM regulation / Notch receptor processing / skin morphogenesis / membrane protein intracellular domain proteolysis / NOTCH4 Activation and Transmission of Signal to the Nucleus / ciliary rootlet / neural retina development / Regulated proteolysis of p75NTR / mitochondria-associated endoplasmic reticulum membrane contact site / aggresome / amyloid precursor protein metabolic process / endoplasmic reticulum calcium ion homeostasis / regulation of synaptic vesicle cycle / regulation of postsynapse organization / astrocyte activation involved in immune response / regulation of neuron projection development / Hydrolases; Acting on peptide bonds (peptidases); Aspartic endopeptidases / regulation of canonical Wnt signaling pathway / Golgi cisterna membrane / growth factor receptor binding / azurophil granule membrane / positive regulation of amyloid fibril formation / positive regulation of dendritic spine development / amyloid-beta formation / amyloid precursor protein catabolic process / membrane protein ectodomain proteolysis / smooth endoplasmic reticulum / positive regulation of receptor recycling / nuclear outer membrane / EPH-ephrin mediated repulsion of cells / cerebellum development / Notch signaling pathway / negative regulation of ubiquitin-dependent protein catabolic process / Nuclear signaling by ERBB4 / endopeptidase activator activity / calcium ion homeostasis / Degradation of the extracellular matrix / rough endoplasmic reticulum / neuron projection maintenance / astrocyte activation / positive regulation of glycolytic process / NOTCH2 Activation and Transmission of Signal to the Nucleus / NRIF signals cell death from the nucleus / Activated NOTCH1 Transmits Signal to the Nucleus / dendritic shaft / protein processing / PDZ domain binding / neuromuscular junction / NOTCH3 Activation and Transmission of Signal to the Nucleus / cell-cell adhesion / memory / synapse organization / sarcolemma / beta-catenin binding / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / cellular response to amyloid-beta / calcium channel activity / kinetochore / positive regulation of tumor necrosis factor production / melanosome / regulation of gene expression / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / negative regulation of neuron apoptotic process / synaptic vesicle / nuclear membrane / ATPase binding / growth cone / presynaptic membrane / early endosome membrane / endopeptidase activity / cell cortex / aspartic-type endopeptidase activity / molecular adaptor activity / early endosome / learning or memory / protein-macromolecule adaptor activity / postsynapse / endosome membrane / neuron projection / mitochondrial inner membrane / intracellular signal transduction / cadherin binding / membrane raft / Amyloid fiber formation / negative regulation of gene expression / Golgi membrane / lysosomal membrane / focal adhesion / apoptotic process / neuronal cell body / centrosome / positive regulation of gene expression / negative regulation of apoptotic process / Neutrophil degranulation
Similarity search - Function
Peptidase A22A, presenilin 1 / Gamma-secretase subunit Aph-1 / Gamma-secretase aspartyl protease complex, presenilin enhancer-2 subunit / Aph-1 protein / Presenilin enhancer-2 subunit of gamma secretase / Peptidase A22A, presenilin / Presenilin, C-terminal / Presenilin / Nicastrin / Nicastrin, small lobe ...Peptidase A22A, presenilin 1 / Gamma-secretase subunit Aph-1 / Gamma-secretase aspartyl protease complex, presenilin enhancer-2 subunit / Aph-1 protein / Presenilin enhancer-2 subunit of gamma secretase / Peptidase A22A, presenilin / Presenilin, C-terminal / Presenilin / Nicastrin / Nicastrin, small lobe / Nicastrin large lobe / Nicastrin small lobe / Presenilin/signal peptide peptidase / Presenilin, signal peptide peptidase, family
Similarity search - Domain/homology
1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / Presenilin-1 / Nicastrin / Gamma-secretase subunit APH-1A / Gamma-secretase subunit PEN-2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsBai, X. / Yan, C. / Yang, G. / Lu, P. / Ma, D. / Sun, L. / Zhou, R. / Scheres, S.H.W. / Shi, Y.
CitationJournal: Nature / Year: 2015
Title: An atomic structure of human γ-secretase.
Authors: Xiao-Chen Bai / Chuangye Yan / Guanghui Yang / Peilong Lu / Dan Ma / Linfeng Sun / Rui Zhou / Sjors H W Scheres / Yigong Shi /
Abstract: Dysfunction of the intramembrane protease γ-secretase is thought to cause Alzheimer's disease, with most mutations derived from Alzheimer's disease mapping to the catalytic subunit presenilin 1 (PS1) ...Dysfunction of the intramembrane protease γ-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 γ-secretase at 3.4 Å 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 γ-secretase function.
History
DepositionJun 24, 2015Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 5, 2015Provider: repository / Type: Initial release
Revision 1.1Aug 19, 2015Group: Database references
Revision 1.2Aug 26, 2015Group: Database references
Revision 1.3Sep 16, 2015Group: Database references / Structure summary
SupersessionDec 28, 2016ID: 4UPC
Revision 1.4Dec 28, 2016Group: Other
Revision 1.5Aug 2, 2017Group: Data collection / Category: em_image_scans / em_software / Item: _em_software.image_processing_id / _em_software.name
Revision 1.6Sep 11, 2019Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Source and taxonomy / Structure summary
Category: entity / entity_name_com ...entity / entity_name_com / entity_src_gen / struct_conn / struct_ref
Item: _entity.pdbx_description / _entity_name_com.name ..._entity.pdbx_description / _entity_name_com.name / _entity_src_gen.gene_src_common_name / _entity_src_gen.pdbx_beg_seq_num / _entity_src_gen.pdbx_end_seq_num / _entity_src_gen.pdbx_gene_src_gene / _entity_src_gen.pdbx_gene_src_scientific_name / _entity_src_gen.pdbx_seq_type / _struct_conn.pdbx_leaving_atom_flag / _struct_ref.pdbx_align_begin / _struct_ref.pdbx_seq_one_letter_code
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_unobs_or_zero_occ_atoms / pdbx_validate_close_contact / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_entity_id / _chem_comp.name / _chem_comp.type / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_unobs_or_zero_occ_atoms.label_asym_id / _pdbx_validate_close_contact.auth_asym_id_1 / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_1 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_comp_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Nov 13, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / struct_conn
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag

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Structure visualization

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Assembly

Deposited unit
A: Nicastrin
B: Presenilin-1
C: Gamma-secretase subunit APH-1A
D: Gamma-secretase subunit PEN-2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)177,97217
Polymers172,2534
Non-polymers5,71913
Water00
1


  • Idetical with deposited unit
  • defined by software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein Nicastrin


Mass: 78483.570 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line: HEK 293F / Gene: NCSTN, KIAA0253, UNQ1874/PRO4317 / Cell line (production host): HEK 293F / Production host: HOMO SAPIENS (human) / References: UniProt: Q92542
#2: Protein Presenilin-1 / PS-1 / Protein S182


Mass: 52713.535 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line: HEK 293F / Gene: PSEN1, AD3, PS1, PSNL1 / Cell line (production host): HEK 293F / Production host: HOMO SAPIENS (human)
References: UniProt: P49768, Hydrolases; Acting on peptide bonds (peptidases); Aspartic endopeptidases

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Gamma-secretase subunit ... , 2 types, 2 molecules CD

#3: Protein Gamma-secretase subunit APH-1A / APH-1a / Aph-1alpha / Presenilin-stabilization factor


Mass: 29017.943 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line: HEK 293F / Gene: APH1A, PSF, CGI-78, UNQ579/PRO1141 / Cell line (production host): HEK 293F / Production host: HOMO SAPIENS (human) / References: UniProt: Q96BI3
#4: Protein Gamma-secretase subunit PEN-2 / Presenilin enhancer protein 2


Mass: 12038.029 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line: HEK 293F / Gene: PSENEN, PEN2, MDS033 / Cell line (production host): HEK 293F / Production host: HOMO SAPIENS (human) / References: UniProt: Q9NZ42

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Sugars , 3 types, 11 molecules

#5: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#6: Polysaccharide beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 910.823 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-3[DManpb1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2-2-2/a4-b1_b4-c1_c3-d1_c6-e1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][b-D-Manp]{}[(6+1)][b-D-Manp]{}}}}}LINUCSPDB-CARE
#7: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 1 types, 2 molecules

#8: Chemical ChemComp-PC1 / 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / 3-SN-PHOSPHATIDYLCHOLINE


Mass: 790.145 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C44H88NO8P / Comment: phospholipid*YM

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Details

Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: HUMAN GAMMA-SECRETASE / Type: COMPLEX
Buffer solutionName: 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
SpecimenConc.: 6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: HOLEY CARBON
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE
Details: VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 100, TEMPERATURE- 85, INSTRUMENT- FEI VITROBOT MARK IV, METHOD- BLOT FOR 4 SECONDS BEFORE PLUNGING,

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Electron microscopy imaging

Experimental equipment
Model: Tecnai F30 / Image courtesy: FEI Company
MicroscopyModel: FEI TECNAI F30 / Date: Oct 2, 2014
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: 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 holderTemperature: 85 K
Image recordingElectron dose: 38 e/Å2 / Film or detector model: GATAN K2 (4k x 4k)
Radiation wavelengthRelative weight: 1

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Processing

EM software
IDNameVersionCategory
1CTFFIND3CTF correction
2RELION3D reconstruction
CTF correctionDetails: EACH PARTICLE
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.4 Å / Num. of particles: 159549
Magnification calibration: CROSS- -CORRELATION DENSITIES WITHIN SPHERICAL SHELL
Details: SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-3061. (DEPOSITION ID: 13527).
Symmetry type: POINT
RefinementHighest resolution: 3.4 Å
Refinement stepCycle: LAST / Highest resolution: 3.4 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms9646 0 357 0 10003

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