4FB8

Crystal Structure of apo Acyl-CoA Carboxylase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure, Activity, and Inhibition of the Carboxyltransferase beta-Subunit of Acetyl Coenzyme A Carboxylase (AccD6) from Mycobacterium tuberculosis.

Reddy, M.C.Breda, A.Bruning, J.B.Sherekar, M.Valluru, S.Thurman, C.Ehrenfeld, H.Sacchettini, J.C.

(2014) Antimicrob Agents Chemother 58: 6122-6132

  • DOI: 10.1128/AAC.02574-13
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • In Mycobacterium tuberculosis, the carboxylation of acetyl coenzyme A (acetyl-CoA) to produce malonyl-CoA, a building block in long-chain fatty acid biosynthesis, is catalyzed by two enzymes working sequentially: a biotin carboxylase (AccA) and a car ...

    In Mycobacterium tuberculosis, the carboxylation of acetyl coenzyme A (acetyl-CoA) to produce malonyl-CoA, a building block in long-chain fatty acid biosynthesis, is catalyzed by two enzymes working sequentially: a biotin carboxylase (AccA) and a carboxyltransferase (AccD). While the exact roles of the three different biotin carboxylases (AccA1 to -3) and the six carboxyltransferases (AccD1 to -6) in M. tuberculosis are still not clear, AccD6 in complex with AccA3 can synthesize malonyl-CoA from acetyl-CoA. A series of 10 herbicides that target plant acetyl-CoA carboxylases (ACC) were tested for inhibition of AccD6 and for whole-cell activity against M. tuberculosis. From the tested herbicides, haloxyfop, an arylophenoxypropionate, showed in vitro inhibition of M. tuberculosis AccD6, with a 50% inhibitory concentration (IC50) of 21.4 ± 1 μM. Here, we report the crystal structures of M. tuberculosis AccD6 in the apo form (3.0 Å) and in complex with haloxyfop-R (2.3 Å). The structure of M. tuberculosis AccD6 in complex with haloxyfop-R shows two molecules of the inhibitor bound on each AccD6 subunit. These results indicate the potential for developing novel therapeutics for tuberculosis based on herbicides with low human toxicity.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, USA sacchett@tamu.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Probable propionyl-CoA carboxylase beta chain 6A, B473Mycobacterium tuberculosisMutation(s): 0 
Gene Names: accD6MT2307MTCY427.28Rv2247
EC: 6.4.1.3
Find proteins for P9WQH5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WQH5 
Go to UniProtKB:  P9WQH5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.236 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.284α = 90
b = 82.361β = 90
c = 157.87γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2014-08-13
    Changes: Database references
  • Version 1.2: 2014-10-01
    Changes: Database references
  • Version 1.3: 2017-11-15
    Changes: Refinement description