4RCN

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

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: 10.1038/nature13912

  • 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 linke ...

    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.,1] Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA [2] Howard Hughes Medical Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.,Department of Biological Sciences, Columbia University, New York, New York 10027, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
long-chain acyl-CoA carboxylase
A, B
1093Mycobacterium paratuberculosis (strain ATCC BAA-968 / K-10)Mutation(s): 0 
Find proteins for Q73VY8 (Mycobacterium paratuberculosis (strain ATCC BAA-968 / K-10))
Go to UniProtKB:  Q73VY8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.209 
  • Space Group: P 21 3
Unit Cell:
Length (Å)Angle (°)
a = 220.880α = 90.00
b = 220.880β = 90.00
c = 220.880γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2014-09-16 
  • Released Date: 2014-11-05 
  • Deposition Author(s): Tran, T.H., Tong, L.

Revision History 

  • Version 1.0: 2014-11-05
    Type: Initial release
  • Version 1.1: 2014-12-03
    Type: Database references
  • Version 1.2: 2015-03-11
    Type: Database references