4UIS

The cryoEM structure of human gamma-Secretase complex

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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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 U S A 112: 6003

  • DOI: 10.1073/pnas.1506242112
  • Primary Citation of Related Structures:  
    4UIS

  • 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 report ...

    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 shi-lab@tsinghua.edu.cn.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GAMMA-SECRETASE A588Homo sapiensMutation(s): 0 
Gene Names: NCSTN, KIAA0253, UNQ1874/PRO4317
Find proteins for Q92542 (Homo sapiens)
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Go to UniProtKB:  Q92542
NIH Common Fund Data Resources
PHAROS:  Q92542
GTEx:  ENSG00000162736
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
GAMMA-SECRETASE B241Homo sapiensMutation(s): 0 
Gene Names: PSEN1, AD3, PS1, PSNL1
EC: 3.4.23
Find proteins for P49768 (Homo sapiens)
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Go to UniProtKB:  P49768
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PHAROS:  P49768
GTEx:  ENSG00000080815
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
GAMMA-SECRETASE C196Homo sapiensMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
GAMMA-SECRETASE D62Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
LYSOZYME G162Homo sapiensMutation(s): 0 
EC: 3.2.1.17
Find proteins for D9IEF7 (Enterobacteria phage T4)
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History 

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