4Q7C

Structure of AF2299, a CDP-alcohol phosphotransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structural basis for catalysis in a CDP-alcohol phosphotransferase.

Sciara, G.Clarke, O.B.Tomasek, D.Kloss, B.Tabuso, S.Byfield, R.Cohn, R.Banerjee, S.Rajashankar, K.R.Slavkovic, V.Graziano, J.H.Shapiro, L.Mancia, F.

(2014) Nat Commun 5: 4068-4068

  • DOI: https://doi.org/10.1038/ncomms5068
  • Primary Citation of Related Structures:  
    4O6M, 4O6N, 4Q7C

  • PubMed Abstract: 

    The CDP-alcohol phosphotransferase (CDP-AP) family of integral membrane enzymes catalyses the transfer of a substituted phosphate group from a CDP-linked donor to an alcohol acceptor. This is an essential reaction for phospholipid biosynthesis across all kingdoms of life, and it is catalysed solely by CDP-APs. Here we report the 2.0 Å resolution crystal structure of a representative CDP-AP from Archaeoglobus fulgidus. The enzyme (AF2299) is a homodimer, with each protomer consisting of six transmembrane helices and an N-terminal cytosolic domain. A polar cavity within the membrane accommodates the active site, lined with the residues from an absolutely conserved CDP-AP signature motif (D(1)xxD(2)G(1)xxAR...G(2)xxxD(3)xxxD(4)). Structures in the apo, CMP-bound, CDP-bound and CDP-glycerol-bound states define functional roles for each of these eight conserved residues and allow us to propose a sequential, base-catalysed mechanism universal for CDP-APs, in which the fourth aspartate (D4) acts as the catalytic base.


  • Organizational Affiliation

    1] Department of Physiology and Cellular Biophysics, Columbia University, New York, New York 10032, USA [2].


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
AF2299, a CDP-alcohol phosphotransferase
A, B
372Archaeoglobus fulgidus DSM 4304Mutation(s): 0 
Gene Names: AF2299AF_2299
Membrane Entity: Yes 
UniProt
Find proteins for O27985 (Archaeoglobus fulgidus (strain ATCC 49558 / DSM 4304 / JCM 9628 / NBRC 100126 / VC-16))
Explore O27985 
Go to UniProtKB:  O27985
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO27985
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
C2G
Query on C2G

Download Ideal Coordinates CCD File 
J [auth A],
R [auth B]
[CYTIDINE-5'-PHOSPHATE] GLYCERYLPHOSPHORIC ACID ESTER
C12 H21 N3 O13 P2
HHPOUCCVONEPRK-CNYIRLTGSA-N
MPG
Query on MPG

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
H [auth A]
M [auth B]
E [auth A],
F [auth A],
G [auth A],
H [auth A],
M [auth B],
N [auth B],
O [auth B],
P [auth B]
[(Z)-octadec-9-enyl] (2R)-2,3-bis(oxidanyl)propanoate
C21 H40 O4
JPJYKWFFJCWMPK-GDCKJWNLSA-N
TLA
Query on TLA

Download Ideal Coordinates CCD File 
I [auth A],
Q [auth B]
L(+)-TARTARIC ACID
C4 H6 O6
FEWJPZIEWOKRBE-JCYAYHJZSA-N
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
K [auth B],
L [auth B]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.417α = 90
b = 90.852β = 92.21
c = 106.611γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata scaling
XDSdata reduction
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2014-05-28
    Type: Initial release
  • Version 1.1: 2014-08-13
    Changes: Database references
  • Version 1.2: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description