4AE7 | pdb_00004ae7

Crystal structure of human THEM5

• PDB DOI: https://doi.org/10.2210/pdb4AE7/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• 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: 1.45 Å
• R-Value Free: 
  0.171 (Depositor), 0.168 (DCC) 
• R-Value Work: 
  0.140 (Depositor), 0.139 (DCC) 
• R-Value Observed: 
  0.142 (Depositor) 

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 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)

Macromolecule Content 

• Total Structure Weight: 24.54 kDa 
• Atom Count: 1,673 
• Modeled Residue Count: 186 
• Deposited Residue Count: 220 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
THIOESTERASE SUPERFAMILY MEMBER 5	A	220	Homo sapiens	Mutation(s): 1  EC: 3.1.2.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N1Q8 (Homo sapiens) Explore Q8N1Q8  Go to UniProtKB:  Q8N1Q8
PHAROS:  Q8N1Q8 GTEx:  ENSG00000196407

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free:  0.171 (Depositor), 0.168 (DCC) 
• R-Value Work:  0.140 (Depositor), 0.139 (DCC) 
• R-Value Observed: 0.142 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.389	α = 90
b = 88.634	β = 90
c = 105.323	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	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