5K68

Designed Artificial Cupredoxins


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.142 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Modular Artificial Cupredoxins.

Mann, S.I.Heinisch, T.Weitz, A.C.Hendrich, M.P.Ward, T.R.Borovik, A.S.

(2016) J.Am.Chem.Soc. 138: 9073-9076

  • DOI: 10.1021/jacs.6b05428
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cupredoxins are electron-transfer proteins that have active sites containing a mononuclear Cu center with an unusual trigonal monopyramidal structure (Type 1 Cu). A single Cu-Scys bond is present within the trigonal plane that is responsible for its ...

    Cupredoxins are electron-transfer proteins that have active sites containing a mononuclear Cu center with an unusual trigonal monopyramidal structure (Type 1 Cu). A single Cu-Scys bond is present within the trigonal plane that is responsible for its unique physical properties. We demonstrate that a cysteine-containing variant of streptavidin (Sav) can serve as a protein host to model the structure and properties of Type 1 Cu sites. A series of artificial Cu proteins are described that rely on Sav and a series of biotinylated synthetic Cu complexes. Optical and EPR measurements highlight the presence of a Cu-Scys bond, and XRD analysis provides structural evidence. We further provide evidence that changes in the linker between the biotin and Cu complex within the synthetic constructs allows for small changes in the placement of Cu centers within Sav that have dramatic effects on the structural and physical properties of the resulting artificial metalloproteins. These findings highlight the utility of the biotin-Sav technology as an approach for simulating active sites of metalloproteins.


    Organizational Affiliation

    Department of Chemistry, University of California-Irvine , 1102 Natural Sciences II, Irvine, California 92697, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Streptavidin
A
159Streptomyces avidiniiMutation(s): 0 
Find proteins for P22629 (Streptomyces avidinii)
Go to UniProtKB:  P22629
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SI9
Query on SI9

Download SDF File 
Download CCD File 
A
[CuII(biot-bu-dpea)]2+
C28 H40 Cu N6 O2 S
QOBKFHSZBSMICN-PBQYMGKRSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.142 
  • Space Group: I 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 57.690α = 90.00
b = 57.690β = 90.00
c = 183.610γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
Aimlessdata scaling
XDSdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of HealthUnited StatesGM50781-21S1

Revision History 

  • Version 1.0: 2016-07-20
    Type: Initial release
  • Version 1.1: 2016-08-03
    Type: Database references
  • Version 1.2: 2018-01-31
    Type: Author supporting evidence