4BRB

Crystal structure of the integral membrane enzyme DgkA-ref, delta 7


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Renaturing Membrane Proteins in the Lipid Cubic Phase, a Nanoporous Membrane Mimetic.

Li, D.Caffrey, M.

(2014) Sci Rep 4: 5806

  • DOI: https://doi.org/10.1038/srep05806
  • Primary Citation of Related Structures:  
    4BRB, 4UP6

  • PubMed Abstract: 

    Membrane proteins play vital roles in the life of the cell and are important therapeutic targets. Producing them in large quantities, pure and fully functional is a major challenge. Many promising projects end when intractable aggregates or precipitates form. Here we show how such unfolded aggregates can be solubilized and the solution mixed with lipid to spontaneously self-assemble a bicontinuous cubic mesophase into the bilayer of which the protein, in a confined, chaperonin-like environment, reconstitutes with 100% efficiency. The test protein, diacylglycerol kinase, reconstituted in the bilayer of the mesophase, was then crystallized in situ by the in meso or lipid cubic phase method providing an X-ray structure to a resolution of 2.55 Å. This highly efficient, inexpensive, simple and rapid approach should find application wherever properly folded, membrane reconstituted and functional proteins are required where the starting material is a denatured aggregate.


  • Organizational Affiliation

    School of Biochemistry and Immunology & School of Medicine, Trinity College Dublin, Dublin, Ireland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DIACYLGLYCEROL KINASE
A, B, C, D, E
A, B, C, D, E, F
130Escherichia coli K-12Mutation(s): 7 
EC: 2.7.1.107
Membrane Entity: Yes 
UniProt
Find proteins for P0ABN1 (Escherichia coli (strain K12))
Explore P0ABN1 
Go to UniProtKB:  P0ABN1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0ABN1
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
78N
Query on 78N

Download Ideal Coordinates CCD File 
G [auth A]
H [auth A]
I [auth A]
J [auth A]
K [auth A]
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth B],
M [auth B],
N [auth C],
R [auth D],
S [auth D]
(2R)-2,3-DIHYDROXYPROPYL(7Z)-PENTADEC-7-ENOATE
C18 H34 O4
BJMLBVHMHXYQFS-XZVRFQMRSA-N
FLC
Query on FLC

Download Ideal Coordinates CCD File 
P [auth D]CITRATE ANION
C6 H5 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-K
ZN
Query on ZN

Download Ideal Coordinates CCD File 
O [auth D]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
ACT
Query on ACT

Download Ideal Coordinates CCD File 
Q [auth D]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.5α = 90
b = 91.57β = 90
c = 143.57γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-06-18
    Type: Initial release
  • Version 1.1: 2014-10-22
    Changes: Database references
  • Version 1.2: 2019-03-06
    Changes: Data collection, Experimental preparation, Other
  • Version 1.3: 2019-04-03
    Changes: Data collection, Experimental preparation
  • Version 1.4: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description