5MSS

Structure of the A-PCP didomain of carboxylic acid reductase (CAR) from Segniliparus rugosus in complex with AMP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structures of carboxylic acid reductase reveal domain dynamics underlying catalysis.

Gahloth, D.Dunstan, M.S.Quaglia, D.Klumbys, E.Lockhart-Cairns, M.P.Hill, A.M.Derrington, S.R.Scrutton, N.S.Turner, N.J.Leys, D.

(2017) Nat. Chem. Biol. 13: 975-981

  • DOI: 10.1038/nchembio.2434
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Carboxylic acid reductase (CAR) catalyzes the ATP- and NADPH-dependent reduction of carboxylic acids to the corresponding aldehydes. The enzyme is related to the nonribosomal peptide synthetases, consisting of an adenylation domain fused via a peptid ...

    Carboxylic acid reductase (CAR) catalyzes the ATP- and NADPH-dependent reduction of carboxylic acids to the corresponding aldehydes. The enzyme is related to the nonribosomal peptide synthetases, consisting of an adenylation domain fused via a peptidyl carrier protein (PCP) to a reductase termination domain. Crystal structures of the CAR adenylation-PCP didomain demonstrate that large-scale domain motions occur between the adenylation and thiolation states. Crystal structures of the PCP-reductase didomain reveal that phosphopantetheine binding alters the orientation of a key Asp, resulting in a productive orientation of the bound nicotinamide. This ensures that further reduction of the aldehyde product does not occur. Combining crystallography with small-angle X-ray scattering (SAXS), we propose that molecular interactions between initiation and termination domains are limited to competing PCP docking sites. This theory is supported by the fact that (R)-pantetheine can support CAR activity for mixtures of the isolated domains. Our model suggests directions for further development of CAR as a biocatalyst.


    Organizational Affiliation

    Manchester Institute of Biotechnology, School of Chemistry, University of Manchester, Manchester, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioester reductase domain-containing protein
A
1188Segniliparus rugosus ATCC BAA-974Mutation(s): 0 
Find proteins for E5XP76 (Segniliparus rugosus ATCC BAA-974)
Go to UniProtKB:  E5XP76
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
AMP
Query on AMP

Download SDF File 
Download CCD File 
A
ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.204 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 59.719α = 90.00
b = 127.693β = 90.00
c = 212.244γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata scaling
XDSdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2017-01-05 
  • Released Date: 2017-07-05 
  • Deposition Author(s): Gahloth, D., Leys, D.

Revision History 

  • Version 1.0: 2017-07-05
    Type: Initial release
  • Version 1.1: 2017-07-12
    Type: Database references
  • Version 1.2: 2017-07-26
    Type: Database references, Structure summary
  • Version 1.3: 2017-08-30
    Type: Database references