4UIS

The cryoEM structure of human gamma-Secretase complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.4 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis of Human Gamma-Secretase Assembly.

Sun, L.Zhao, L.Yang, G.Yan, C.Zhou, R.Zhou, X.Xie, T.Zhao, Y.Wu, S.Li, X.Shi, Y.

(2015) Proc.Natl.Acad.Sci.USA 112: 6003

  • DOI: 10.1073/pnas.1506242112

  • PubMed Abstract: 
  • The four-component intramembrane protease γ-secretase is intricately linked to the development of Alzheimer's disease. Despite recent structural advances, the transmembrane segments (TMs) of γ-secretase remain to be specifically assigned. Here we rep ...

    The four-component intramembrane protease γ-secretase is intricately linked to the development of Alzheimer's disease. Despite recent structural advances, the transmembrane segments (TMs) of γ-secretase remain to be specifically assigned. Here we report a 3D structure of human γ-secretase at 4.32-Å resolution, determined by single-particle, electron cryomicroscopy in the presence of digitonin and with a T4 lysozyme fused to the amino terminus of presenilin 1 (PS1). The overall structure of this human γ-secretase is very similar to that of wild-type γ-secretase determined in the presence of amphipols. The 20 TMs are unambiguously assigned to the four components, revealing principles of subunit assembly. Within the transmembrane region, PS1 is centrally located, with its amino-terminal fragment (NTF) packing against Pen-2 and its carboxyl-terminal fragment (CTF) interacting with Aph-1. The only TM of nicastrin associates with Aph-1 at the thick end of the TM horseshoe, and the extracellular domain of nicastrin directly binds Pen-2 at the thin end. TM6 and TM7 in PS1, which harbor the catalytic aspartate residues, are located on the convex side of the TM horseshoe. This structure serves as an important framework for understanding the function and mechanism of γ-secretase.


    Organizational Affiliation

    Ministry of Education Key Laboratory of Protein Science, Tsinghua-Peking Joint Center for Life Sciences, Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GAMMA-SECRETASE
A
588Homo sapiensGene Names: NCSTN (KIAA0253)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Intramembrane Proteases
Protein: 
γ-secretase
Find proteins for Q92542 (Homo sapiens)
Go to Gene View: NCSTN
Go to UniProtKB:  Q92542
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GAMMA-SECRETASE
B
241Homo sapiensGene Names: PSEN1 (AD3, PS1, PSNL1)
EC: 3.4.23.-
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Intramembrane Proteases
Protein: 
γ-secretase
Find proteins for P49768 (Homo sapiens)
Go to Gene View: PSEN1
Go to UniProtKB:  P49768
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
GAMMA-SECRETASE
C
196N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
GAMMA-SECRETASE
D
62N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
LYSOZYME
G
162Enterobacteria phage T4Gene Names: e
EC: 3.2.1.17
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Intramembrane Proteases
Protein: 
γ-secretase
Find proteins for D9IEF7 (Enterobacteria phage T4)
Go to UniProtKB:  D9IEF7
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
A, B, C, D
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.4 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-10
    Type: Initial release
  • Version 1.1: 2017-08-02
    Type: Data collection