1M4H

Crystal Structure of Beta-secretase complexed with Inhibitor OM00-3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Crystal Structure of Memapsin 2 (beta-Secretase) in Complex with Inhibitor OM00-3

Hong, L.Turner, R.T.Koelsch, G.Shin, D.Ghosh, A.K.Tang, J.

(2002) Biochemistry 41: 10963-10967


  • PubMed Abstract: 
  • The structure of the catalytic domain of human memapsin 2 bound to an inhibitor OM00-3 (Glu-Leu-Asp-LeuAla-Val-Glu-Phe, K(i) = 0.3 nM, the asterisk denotes the hydroxyethylene transition-state isostere) has been determined at 2.1 A resolution. Unique ...

    The structure of the catalytic domain of human memapsin 2 bound to an inhibitor OM00-3 (Glu-Leu-Asp-LeuAla-Val-Glu-Phe, K(i) = 0.3 nM, the asterisk denotes the hydroxyethylene transition-state isostere) has been determined at 2.1 A resolution. Uniquely defined in the structure are the locations of S(3)' and S(4)' subsites, which were not identified in the previous structure of memapsin 2 in complex with the inhibitor OM99-2 (Glu-Val-Asn-LeuAla-Ala-Glu-Phe, K(i) = 1 nM). Different binding modes for the P(2) and P(4) side chains are also observed. These new structural elements are useful for the design of new inhibitors. The structural and kinetic data indicate that the replacement of the P(2)' alanine in OM99-2 with a valine in OM00-3 stabilizes the binding of P(3)' and P(4)'.


    Organizational Affiliation

    Protein Studies Program, Oklahoma Medical Research Foundation, and Department of Biochemistry and Molecular Biology, University of Oklahoma Medical Center, Oklahoma City, Oklahoma 73104, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
beta-Secretase
A, B
391Homo 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
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Inhibitor OM00-3
C, D
7N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000289
Query on PRD_000289
C,DBETA-SECRETASE INHIBITOR OM00-3Peptide-like / Inhibitor

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.216 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 86.450α = 90.00
b = 88.787β = 90.00
c = 130.954γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-08-28
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2012-12-12
    Type: Other
  • Version 1.4: 2017-04-05
    Type: Other