6HXQ

Structure of citryl-CoA synthetase from Hydrogenobacter thermophilus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of ATP citrate lyase and the origin of citrate synthase in the Krebs cycle.

Verschueren, K.H.G.Blanchet, C.Felix, J.Dansercoer, A.De Vos, D.Bloch, Y.Van Beeumen, J.Svergun, D.Gutsche, I.Savvides, S.N.Verstraete, K.

(2019) Nature 568: 571-575

  • DOI: 10.1038/s41586-019-1095-5
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Across different kingdoms of life, ATP citrate lyase (ACLY, also known as ACL) catalyses the ATP-dependent and coenzyme A (CoA)-dependent conversion of citrate, a metabolic product of the Krebs cycle, to oxaloacetate and the high-energy biosynthetic ...

    Across different kingdoms of life, ATP citrate lyase (ACLY, also known as ACL) catalyses the ATP-dependent and coenzyme A (CoA)-dependent conversion of citrate, a metabolic product of the Krebs cycle, to oxaloacetate and the high-energy biosynthetic precursor acetyl-CoA 1 . The latter fuels pivotal biochemical reactions such as the synthesis of fatty acids, cholesterol and acetylcholine 2 , and the acetylation of histones and proteins 3,4 . In autotrophic prokaryotes, ACLY is a hallmark enzyme of the reverse Krebs cycle (also known as the reductive tricarboxylic acid cycle), which fixates two molecules of carbon dioxide in acetyl-CoA 5,6 . In humans, ACLY links carbohydrate and lipid metabolism and is strongly expressed in liver and adipose tissue 1 and in cholinergic neurons 2,7 . The structural basis of the function of ACLY remains unknown. Here we report high-resolution crystal structures of bacterial, archaeal and human ACLY, and use distinct substrate-bound states to link the conformational plasticity of ACLY to its multistep catalytic itinerary. Such detailed insights will provide the framework for targeting human ACLY in cancer 8-11 and hyperlipidaemia 12,13 . Our structural studies also unmask a fundamental evolutionary relationship that links citrate synthase, the first enzyme of the oxidative Krebs cycle, to an ancestral tetrameric citryl-CoA lyase module that operates in the reverse Krebs cycle. This molecular transition marked a key step in the evolution of metabolism on Earth.


    Organizational Affiliation

    Unit for Structural Biology, VIB Center for Inflammation Research, Ghent, Belgium. kenneth.verstraete@ugent.be.,Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium.,Unit for Structural Biology, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium. kenneth.verstraete@ugent.be.,Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium.,Unit for Structural Biology, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium.,Unit for Structural Biology, VIB Center for Inflammation Research, Ghent, Belgium.,University of Grenoble Alpes, CNRS, CEA, CNRS, IBS, Grenoble, France.,European Molecular Biology Laboratory (EMBL), Hamburg Outstation c/o DESY, Hamburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Citryl-CoA synthetase small subunit
A, C
353Hydrogenobacter thermophilusMutation(s): 0 
Gene Names: ccsB
Find proteins for Q75VW6 (Hydrogenobacter thermophilus)
Go to UniProtKB:  Q75VW6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Citryl-CoA synthetase large subunit
B, D
429Hydrogenobacter thermophilusMutation(s): 0 
Gene Names: ccsA
Find proteins for Q75VW8 (Hydrogenobacter thermophilus)
Go to UniProtKB:  Q75VW8
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download SDF File 
Download CCD File 
A, C
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
PGE
Query on PGE

Download SDF File 
Download CCD File 
A, C
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
FLC
Query on FLC

Download SDF File 
Download CCD File 
B
CITRATE ANION
C6 H5 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.91 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 118.495α = 90.00
b = 127.029β = 90.00
c = 143.797γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
BUSTERrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Research Foundation - FlandersBelgium1524918N

Revision History 

  • Version 1.0: 2019-04-10
    Type: Initial release
  • Version 1.1: 2019-04-17
    Type: Data collection, Database references
  • Version 1.2: 2019-05-08
    Type: Data collection, Database references