Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 38.27 kDa 
• Atom Count: 2506 
• Modelled Residue Count: 280 
• Deposited Residue Count: 323 
• Unique protein chains: 1

2C43

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

• PDB DOI: 10.2210/pdb2C43/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2005-10-14 Released: 2005-10-24 
• Deposition Author(s): Bunkoczi, G., Wu, X., Dubinina, E., Johansson, C., Smee, C., Turnbull, A., von Delft, F., Arrowsmith, C., Edwards, A., Sundstrom, M., Weigelt, J., Oppermann, U.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.93 Å
• R-Value Free: 0.219 
• R-Value Work: 0.158 
• R-Value Observed: 0.162 

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

• PubMed: 18022563 
• DOI: 10.1016/j.chembiol.2007.10.013
• Primary Citation of Related Structures:  
  2BYD, 2C43, 2CG5


• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AMINOADIPATE-SEMIALDEHYDE DEHYDROGENASE-PHOSPHOPANTETHEINYL TRANSFERASE	A	323	Homo sapiens	Mutation(s): 0  Gene Names: AASDHPPT, CGI-80, HAH-P, HSPC223, x0005 EC: 1.2.1.31 (PDB Primary Data), 2.7.8.7 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NRN7 (Homo sapiens) Explore Q9NRN7  Go to UniProtKB:  Q9NRN7
PHAROS:  Q9NRN7

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
COA	B [auth A]	COENZYME A C21 H36 N7 O16 P3 S RGJOEKWQDUBAIZ-IBOSZNHHSA-N
CL	D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.93 Å
• R-Value Free: 0.219 
• R-Value Work: 0.158 
• R-Value Observed: 0.162 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.589	α = 90
b = 68.957	β = 90
c = 70.745	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-10-14 
• Released Date: 2005-10-24 
Deposition Author(s): Bunkoczi, G., Wu, X., Dubinina, E., Johansson, C., Smee, C., Turnbull, A., von Delft, F., Arrowsmith, C., Edwards, A., Sundstrom, M., Weigelt, J., Oppermann, U.

Revision History  

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