2ZHS

Crystal structure of BACE1 at pH 4.0


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of an active form of BACE1, an enzyme responsible for amyloid beta protein production

Shimizu, H.Tosaki, A.Kaneko, K.Hisano, T.Sakurai, T.Nukina, N.

(2008) Mol.Cell.Biol. 28: 3663-3671

  • DOI: 10.1128/MCB.02185-07
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • BACE1 (beta-secretase) is a transmembrane aspartic protease that cleaves the beta-amyloid precursor protein and generates the amyloid beta peptide (Abeta). BACE1 cycles between the cell surface and the endosomal system many times and becomes activate ...

    BACE1 (beta-secretase) is a transmembrane aspartic protease that cleaves the beta-amyloid precursor protein and generates the amyloid beta peptide (Abeta). BACE1 cycles between the cell surface and the endosomal system many times and becomes activated interconvertibly during its cellular trafficking, leading to the production of Abeta. Here we report the crystal structure of the catalytically active form of BACE1. The active form has novel structural features involving the conformation of the flap and subsites that promote substrate binding. The functionally essential residues and water molecules are well defined and play a key role in the iterative activation of BACE1. We further describe the crystal structure of the dehydrated form of BACE1, showing that BACE1 activity is dependent on the dynamics of a catalytically required Asp-bound water molecule, which directly affects its catalytic properties. These findings provide insight into a novel regulation of BACE1 activity and elucidate how BACE1 modulates its activity during cellular trafficking.


    Organizational Affiliation

    Laboratory for Structural Neuropathology, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-secretase 1
A
411Homo sapiensMutation(s): 0 
Gene Names: BACE1 (BACE, KIAA1149)
EC: 3.4.23.46
Find proteins for P56817 (Homo sapiens)
Go to Gene View: BACE1
Go to UniProtKB:  P56817
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.210 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 102.999α = 90.00
b = 102.999β = 90.00
c = 170.630γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-04-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance