4AE8

Crystal structure of human THEM4

• PDB DOI: https://doi.org/10.2210/pdb4AE8/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2012-01-09 Released: 2012-07-11 
• Deposition Author(s): Zhuravleva, E., Gut, H., Hynx, D., Marcellin, D., Bleck, C.K.E., Genoud, C., Cron, P., Keusch, J.J., Dummler, B., Degli Esposti, M., Hemmings, B.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.59 Å
• R-Value Free: 0.223 
• R-Value Work: 0.185 
• R-Value Observed: 0.187 

Literature

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

• PubMed: 22586271 
• 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.

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Organizational Affiliation: 

Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 95.57 kDa 
• Atom Count: 6,079 
• Modelled Residue Count: 666 
• Deposited Residue Count: 844 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
THIOESTERASE SUPERFAMILY MEMBER 4	A, B, C, D	211	Homo sapiens	Mutation(s): 0  EC: 3.1.2.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q5T1C6 (Homo sapiens) Explore Q5T1C6  Go to UniProtKB:  Q5T1C6
PHAROS:  Q5T1C6 GTEx:  ENSG00000159445

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• 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 = 50.539	α = 89.96
b = 58.211	β = 71.14
c = 69.681	γ = 64.6

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-07-11 
Deposition Author(s): Zhuravleva, E., Gut, H., Hynx, D., Marcellin, D., Bleck, C.K.E., Genoud, C., Cron, P., Keusch, J.J., Dummler, B., Degli Esposti, M., Hemmings, B.A.

Revision History  

• Version 1.0: 2012-07-11
  Type: Initial release
  
• Version 1.1: 2024-05-08
  Changes: Data collection, Database references, Other