4UXW

Structure of delta4-DgkA-apo in 9.9 MAG


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Ternary Structure Reveals Mechanism of a Membrane Diacylglycerol Kinase.

Li, D.Stansfeld, P.J.Sansom, M.S.P.Keogh, A.Vogeley, L.Howe, N.Lyons, J.A.Aragao, D.Fromme, P.Fromme, R.Basu, S.Grotjohann, I.Kupitz, C.Rendek, K.Weierstall, U.Zatsepin, N.A.Cherezov, V.Liu, W.Bandaru, S.English, N.J.Gati, C.Barty, A.Yefanov, O.Chapman, H.N.Diederichs, K.Messerschmidt, M.Boutet, S.Williams, G.J.Marvin Seibert, M.Caffrey, M.

(2015) Nat.Commun. 6: 10140

  • DOI: 10.1038/ncomms10140
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Diacylglycerol kinase catalyses the ATP-dependent conversion of diacylglycerol to phosphatidic acid in the plasma membrane of Escherichia coli. The small size of this integral membrane trimer, which has 121 residues per subunit, means that available ...

    Diacylglycerol kinase catalyses the ATP-dependent conversion of diacylglycerol to phosphatidic acid in the plasma membrane of Escherichia coli. The small size of this integral membrane trimer, which has 121 residues per subunit, means that available protein must be used economically to craft three catalytic and substrate-binding sites centred about the membrane/cytosol interface. How nature has accomplished this extraordinary feat is revealed here in a crystal structure of the kinase captured as a ternary complex with bound lipid substrate and an ATP analogue. Residues, identified as essential for activity by mutagenesis, decorate the active site and are rationalized by the ternary structure. The γ-phosphate of the ATP analogue is positioned for direct transfer to the primary hydroxyl of the lipid whose acyl chain is in the membrane. A catalytic mechanism for this unique enzyme is proposed. The active site architecture shows clear evidence of having arisen by convergent evolution.


    Organizational Affiliation

    School of Medicine and School of Biochemistry and Immunology, Trinity College Dublin, Dublin 2, Ireland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DIACYLGLYCEROL KINASE
A, B, C
130Escherichia coli (strain K12)Mutation(s): 4 
Gene Names: dgkA
EC: 2.7.1.107
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Phosphotransferases
Protein: 
DgkA diacylglycerol kinase (DAGK)
Find proteins for P0ABN1 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ABN1
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OLC
Query on OLC

Download SDF File 
Download CCD File 
A, B, C
(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
1-Oleoyl-R-glycerol
C21 H40 O4
RZRNAYUHWVFMIP-GDCKJWNLSA-N
 Ligand Interaction
NA
Query on NA

Download SDF File 
Download CCD File 
C
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
NO3
Query on NO3

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Download CCD File 
C
NITRATE ION
N O3
NHNBFGGVMKEFGY-UHFFFAOYSA-N
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
B
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.224 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 72.800α = 90.00
b = 72.800β = 90.00
c = 199.320γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-09-30
    Type: Initial release
  • Version 1.1: 2016-01-13
    Type: Database references
  • Version 1.2: 2019-03-06
    Type: Data collection, Experimental preparation, Other
  • Version 1.3: 2019-04-03
    Type: Data collection, Experimental preparation