8BNR

Escherichia coli anaerobic fatty acid beta oxidation trifunctional enzyme (anEcTFE) octameric complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.3 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis for different membrane-binding properties of E. coli anaerobic and human mitochondrial beta-oxidation trifunctional enzymes.

Sah-Teli, S.K.Pinkas, M.Hynonen, M.J.Butcher, S.J.Wierenga, R.K.Novacek, J.Venkatesan, R.

(2023) Structure 31: 812

  • DOI: https://doi.org/10.1016/j.str.2023.04.011
  • Primary Citation of Related Structures:  
    8BNR, 8BNU, 8BRJ

  • PubMed Abstract: 

    Facultative anaerobic bacteria such as Escherichia coli have two α 2 β 2 heterotetrameric trifunctional enzymes (TFE), catalyzing the last three steps of the β-oxidation cycle: soluble aerobic TFE (EcTFE) and membrane-associated anaerobic TFE (anEcTFE), closely related to the human mitochondrial TFE (HsTFE). The cryo-EM structure of anEcTFE and crystal structures of anEcTFE-α show that the overall assembly of anEcTFE and HsTFE is similar. However, their membrane-binding properties differ considerably. The shorter A5-H7 and H8 regions of anEcTFE-α result in weaker α-β as well as α-membrane interactions, respectively. The protruding H-H region of anEcTFE-β is therefore more critical for membrane-association. Mutational studies also show that this region is important for the stability of the anEcTFE-β dimer and anEcTFE heterotetramer. The fatty acyl tail binding tunnel of the anEcTFE-α hydratase domain, as in HsTFE-α, is wider than in EcTFE-α, accommodating longer fatty acyl tails, in good agreement with their respective substrate specificities.


  • Organizational Affiliation

    Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220 Oulu, Finland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3-ketoacyl-CoA thiolase FadI
A, B, E, F
450Escherichia coli K-12Mutation(s): 0 
Gene Names: fadIyfcYb2342JW2339
EC: 2.3.1.16
UniProt
Find proteins for P76503 (Escherichia coli (strain K12))
Explore P76503 
Go to UniProtKB:  P76503
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP76503
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Fatty acid oxidation complex subunit alpha
C, D, G, H
714Escherichia coli K-12Mutation(s): 0 
Gene Names: fadJyfcXb2341JW2338
EC: 4.2.1.17 (PDB Primary Data), 5.1.2.3 (PDB Primary Data), 1.1.1.35 (PDB Primary Data)
UniProt
Find proteins for P77399 (Escherichia coli (strain K12))
Explore P77399 
Go to UniProtKB:  P77399
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP77399
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.3 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Education, Youth and Sports of the Czech RepublicCzech RepublicLM2018127
Academy of FinlandFinland293369, 289024 and 319194
H2020 Marie Curie Actions of the European CommissionEuropean Union871037, 871037

Revision History  (Full details and data files)

  • Version 1.0: 2023-05-17
    Type: Initial release
  • Version 1.1: 2023-05-31
    Changes: Database references
  • Version 1.2: 2023-07-19
    Changes: Database references, Other
  • Version 1.3: 2023-11-29
    Changes: Data collection