5MSC

Structure of the A domain of carboxylic acid reductase (CAR) from Nocardia iowensis in complex with AMP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.213 

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

    Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK.,Manchester Institute of Biotechnology, School of Chemistry, University of Manchester, Manchester, UK.,Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, University of Manchester, Manchester, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carboxylic acid reductase
A
1174Nocardia iowensisMutation(s): 0 
Gene Names: car
EC: 1.2.1.-
Find proteins for Q6RKB1 (Nocardia iowensis)
Go to UniProtKB:  Q6RKB1
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
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: 1.85 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.213 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 52.080α = 93.51
b = 54.250β = 98.82
c = 66.240γ = 101.78
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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
  • Version 1.3: 2017-08-30
    Type: Database references