Structure and function of a single-chain, multi-domain long-chain acyl-coa carboxylase

Experimental Data Snapshot

  • Resolution: 3.01 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 

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This is version 1.3 of the entry. See complete history


Structure and function of a single-chain, multi-domain long-chain acyl-CoA carboxylase.

Tran, T.H.Hsiao, Y.S.Jo, J.Chou, C.Y.Dietrich, L.E.Walz, T.Tong, L.

(2015) Nature 518: 120-124

  • DOI: https://doi.org/10.1038/nature13912
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Biotin-dependent carboxylases are widely distributed in nature and have important functions in the metabolism of fatty acids, amino acids, carbohydrates, cholesterol and other compounds. Defective mutations in several of these enzymes have been linked to serious metabolic diseases in humans, and acetyl-CoA carboxylase is a target for drug discovery in the treatment of diabetes, cancer and other diseases. Here we report the identification and biochemical, structural and functional characterizations of a novel single-chain (120 kDa), multi-domain biotin-dependent carboxylase in bacteria. It has preference for long-chain acyl-CoA substrates, although it is also active towards short-chain and medium-chain acyl-CoAs, and we have named it long-chain acyl-CoA carboxylase. The holoenzyme is a homo-hexamer with molecular mass of 720 kDa. The 3.0 Å crystal structure of the long-chain acyl-CoA carboxylase holoenzyme from Mycobacterium avium subspecies paratuberculosis revealed an architecture that is strikingly different from those of related biotin-dependent carboxylases. In addition, the domains of each monomer have no direct contact with each other. They are instead extensively swapped in the holoenzyme, such that one cycle of catalysis involves the participation of four monomers. Functional studies in Pseudomonas aeruginosa suggest that the enzyme is involved in the utilization of selected carbon and nitrogen sources.

  • Organizational Affiliation

    Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
long-chain acyl-CoA carboxylase
A, B
1,093Mycobacterium avium subsp. paratuberculosis K-10Mutation(s): 0 
Gene Names: MAP_2873c
Find proteins for Q73VY8 (Mycolicibacterium paratuberculosis (strain ATCC BAA-968 / K-10))
Explore Q73VY8 
Go to UniProtKB:  Q73VY8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ73VY8
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.01 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 220.88α = 90
b = 220.88β = 90
c = 220.88γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-05
    Type: Initial release
  • Version 1.1: 2014-12-03
    Changes: Database references
  • Version 1.2: 2015-03-11
    Changes: Database references
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references