4ETJ

Crystal Structure of E6H variant of de novo designed serine hydrolase OSH55, Northeast Structural Genomics Consortium (NESG) Target OR185


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.203 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Design of activated serine-containing catalytic triads with atomic-level accuracy.

Rajagopalan, S.Wang, C.Yu, K.Kuzin, A.P.Richter, F.Lew, S.Miklos, A.E.Matthews, M.L.Seetharaman, J.Su, M.Hunt, J.F.Cravatt, B.F.Baker, D.

(2014) Nat.Chem.Biol. 10: 386-391

  • DOI: 10.1038/nchembio.1498
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A challenge in the computational design of enzymes is that multiple properties, including substrate binding, transition state stabilization and product release, must be simultaneously optimized, and this has limited the absolute activity of successfu ...

    A challenge in the computational design of enzymes is that multiple properties, including substrate binding, transition state stabilization and product release, must be simultaneously optimized, and this has limited the absolute activity of successful designs. Here, we focus on a single critical property of many enzymes: the nucleophilicity of an active site residue that initiates catalysis. We design proteins with idealized serine-containing catalytic triads and assess their nucleophilicity directly in native biological systems using activity-based organophosphate probes. Crystal structures of the most successful designs show unprecedented agreement with computational models, including extensive hydrogen bonding networks between the catalytic triad (or quartet) residues, and mutagenesis experiments demonstrate that these networks are critical for serine activation and organophosphate reactivity. Following optimization by yeast display, the designs react with organophosphate probes at rates comparable to natural serine hydrolases. Co-crystal structures with diisopropyl fluorophosphate bound to the serine nucleophile suggest that the designs could provide the basis for a new class of organophosphate capture agents.


    Organizational Affiliation

    1] Department of Biochemistry, University of Washington, Seattle, Washington, United States. [2].




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine hydrolase
A
167N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PE4
Query on PE4

Download SDF File 
Download CCD File 
A
2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL
POLYETHYLENE GLYCOL PEG4000
C16 H34 O8
PJWQOENWHPEPKI-UHFFFAOYSA-N
 Ligand Interaction
PE6
Query on PE6

Download SDF File 
Download CCD File 
A
PHOSPHORYL-HEXAETHYLENE GLYCOL
C12 H27 O10 P
PTMCGHPIYOSATH-UHFFFAOYSA-N
 Ligand Interaction
PE5
Query on PE5

Download SDF File 
Download CCD File 
A
3,6,9,12,15,18,21,24-OCTAOXAHEXACOSAN-1-OL
2-(2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL, POLYETHYLENE GLYCOL PEG400
C18 H38 O9
CUDPPTPIUWYGFI-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.203 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.183 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 65.930α = 90.00
b = 65.930β = 90.00
c = 89.260γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2012-06-13
    Type: Initial release
  • Version 1.1: 2014-04-16
    Type: Database references
  • Version 1.2: 2014-05-14
    Type: Database references