2C43

STRUCTURE OF AMINOADIPATE-SEMIALDEHYDE DEHYDROGENASE- PHOSPHOPANTETHEINYL TRANSFERASE IN COMPLEX WITH COENZYME A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Mechanism and substrate recognition of human holo ACP synthase.

Bunkoczi, G.Pasta, S.Joshi, A.Wu, X.Kavanagh, K.L.Smith, S.Oppermann, U.

(2007) Chem. Biol. 14: 1243-1253

  • DOI: 10.1016/j.chembiol.2007.10.013
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Mammals utilize a single phosphopantetheinyl transferase for the posttranslational modification of at least three different apoproteins: the carrier protein components of cytosolic and mitochondrial fatty acid synthases and the aminoadipate semialdeh ...

    Mammals utilize a single phosphopantetheinyl transferase for the posttranslational modification of at least three different apoproteins: the carrier protein components of cytosolic and mitochondrial fatty acid synthases and the aminoadipate semialdehyde reductase involved in lysine degradation. We determined the crystal structure of the human phosphopantetheinyl transferase, a eukaryotic phosphopantetheinyl transferase characterized, complexed with CoA and Mg(2+), and in ternary complex with CoA and ACP. The involvement of key residues in ligand binding and catalysis was confirmed by mutagenesis and kinetic analysis. Human phosphopantetheinyl transferase exhibits an alpha/beta fold and 2-fold pseudosymmetry similar to the Sfp phosphopantetheinyl transferase from Bacillus subtilis. Although the bound ACP exhibits a typical four-helix structure, its binding is unusual in that it is facilitated predominantly by hydrophobic interactions. A detailed mechanism is proposed describing the substrate binding and catalytic process.


    Organizational Affiliation

    Structural Genomics Consortium, University of Oxford, Oxford OX3 7LD, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AMINOADIPATE-SEMIALDEHYDE DEHYDROGENASE-PHOSPHOPANTETHEINYL TRANSFERASE
A
323Homo sapiensMutation(s): 0 
Gene Names: AASDHPPT
EC: 2.7.8.7
Find proteins for Q9NRN7 (Homo sapiens)
Go to Gene View: AASDHPPT
Go to UniProtKB:  Q9NRN7
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
COA
Query on COA

Download SDF File 
Download CCD File 
A
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.158 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 65.589α = 90.00
b = 68.957β = 90.00
c = 70.745γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-10-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Refinement description, Version format compliance
  • Version 1.2: 2018-01-24
    Type: Structure summary
  • Version 1.3: 2018-02-28
    Type: Database references, Source and taxonomy