6AS5

CRYSTAL STRUCTURE OF PROTEIN CitE FROM MYCOBACTERIUM TUBERCULOSIS IN COMPLEX WITH MAGNESIUM, ACETOACETATE AND COENZYME A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.04 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.219 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

An essential bifunctional enzyme inMycobacterium tuberculosisfor itaconate dissimilation and leucine catabolism.

Wang, H.Fedorov, A.A.Fedorov, E.V.Hunt, D.M.Rodgers, A.Douglas, H.L.Garza-Garcia, A.Bonanno, J.B.Almo, S.C.de Carvalho, L.P.S.

(2019) Proc Natl Acad Sci U S A 116: 15907-15913

  • DOI: https://doi.org/10.1073/pnas.1906606116
  • Primary Citation of Related Structures:  
    6AQ4, 6ARB, 6AS5, 6CHU, 6CJ3, 6CJ4

  • PubMed Abstract: 

    Mycobacterium tuberculosis (Mtb) is the etiological agent of tuberculosis. One-fourth of the global population is estimated to be infected with Mtb, accounting for ∼1.3 million deaths in 2017. As part of the immune response to Mtb infection, macrophages produce metabolites with the purpose of inhibiting or killing the bacterial cell. Itaconate is an abundant host metabolite thought to be both an antimicrobial agent and a modulator of the host inflammatory response. However, the exact mode of action of itaconate remains unclear. Here, we show that Mtb has an itaconate dissimilation pathway and that the last enzyme in this pathway, Rv2498c, also participates in l-leucine catabolism. Our results from phylogenetic analysis, in vitro enzymatic assays, X-ray crystallography, and in vivo Mtb experiments, identified Mtb Rv2498c as a bifunctional β-hydroxyacyl-CoA lyase and that deletion of the rv2498c gene from the Mtb genome resulted in attenuation in a mouse infection model. Altogether, this report describes an itaconate resistance mechanism in Mtb and an l-leucine catabolic pathway that proceeds via an unprecedented ( R )-3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) stereospecific route in nature.


  • Organizational Affiliation

    Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London NW1 1AT, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Citrate lyase subunit beta-like protein
A, B, C
281Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: citERv2498c
EC: 4.1
UniProt
Find proteins for P9WPE1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WPE1 
Go to UniProtKB:  P9WPE1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WPE1
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download Ideal Coordinates CCD File 
E [auth A],
J [auth B],
N [auth C]
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
AAE
Query on AAE

Download Ideal Coordinates CCD File 
F [auth A],
K [auth B],
O [auth C]
ACETOACETIC ACID
C4 H6 O3
WDJHALXBUFZDSR-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A],
L [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
P [auth C],
Q [auth C]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
D [auth A],
I [auth B],
M [auth C]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.04 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.219 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.579α = 90
b = 72.998β = 98.83
c = 85.788γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-08-01
    Type: Initial release
  • Version 1.1: 2019-02-13
    Changes: Data collection, Database references
  • Version 1.2: 2019-07-31
    Changes: Data collection, Database references
  • Version 1.3: 2019-08-21
    Changes: Data collection, Database references
  • Version 1.4: 2023-03-01
    Changes: Database references, Derived calculations, Source and taxonomy
  • Version 1.5: 2023-10-25
    Changes: Data collection, Refinement description