Crystal structure of human THEM4

Experimental Data Snapshot

  • Resolution: 1.59 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 

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Acyl Coenzyme a Thioesterase Them5/Acot15 is Involved in Cardiolipin Remodeling and Fatty Liver Development.

Zhuravleva, E.Gut, H.Hynx, D.Marcellin, D.Bleck, C.K.E.Genoud, C.Cron, P.Keusch, J.J.Dummler, B.Esposti, M.D.Hemmings, B.A.

(2012) Mol Cell Biol 32: 2685

  • DOI: https://doi.org/10.1128/MCB.00312-12
  • Primary Citation of Related Structures:  
    4AE7, 4AE8

  • PubMed Abstract: 

    Acyl coenzyme A (acyl-CoA) thioesterases hydrolyze thioester bonds in acyl-CoA metabolites. The majority of mammalian thioesterases are α/β-hydrolases and have been studied extensively. A second class of Hotdog-fold enzymes has been less well described. Here, we present a structural and functional analysis of a new mammalian mitochondrial thioesterase, Them5. Them5 and its paralog, Them4, adopt the classical Hotdog-fold structure and form homodimers in crystals. In vitro, Them5 shows strong thioesterase activity with long-chain acyl-CoAs. Loss of Them5 specifically alters the remodeling process of the mitochondrial phospholipid cardiolipin. Them5(-/-) mice show deregulation of lipid metabolism and the development of fatty liver, exacerbated by a high-fat diet. Consequently, mitochondrial morphology is affected, and functions such as respiration and β-oxidation are impaired. The novel mitochondrial acyl-CoA thioesterase Them5 has a critical and specific role in the cardiolipin remodeling process, connecting it to the development of fatty liver and related conditions.

  • Organizational Affiliation

    Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland. elena.zhuravleva@fmi.ch

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
211Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q5T1C6 (Homo sapiens)
Explore Q5T1C6 
Go to UniProtKB:  Q5T1C6
GTEx:  ENSG00000159445 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5T1C6
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.59 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.539α = 89.96
b = 58.211β = 71.14
c = 69.681γ = 64.6
Software Package:
Software NamePurpose
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-07-11
    Type: Initial release