Crystal structure of mouse Ces2c

Experimental Data Snapshot

  • Resolution: 2.12 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.163 

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The Crystal Structure of Mouse Ces2c, a Potential Ortholog of Human CES2, Shows Structural Similarities in Substrate Regulation and Product Release to Human CES1.

Eisner, H.Riegler-Berket, L.Gamez, C.F.R.Sagmeister, T.Chalhoub, G.Darnhofer, B.Jazleena, P.J.Birner-Gruenberger, R.Pavkov-Keller, T.Haemmerle, G.Schoiswohl, G.Oberer, M.

(2022) Int J Mol Sci 23

  • DOI: https://doi.org/10.3390/ijms232113101

  • PubMed Abstract: 

    Members of the carboxylesterase 2 (Ces2/CES2) family have been studied intensively with respect to their hydrolytic function on (pro)drugs, whereas their physiological role in lipid and energy metabolism has been realized only within the last few years. Humans have one CES2 gene which is highly expressed in liver, intestine, and kidney. Interestingly, eight homologous Ces2 (Ces2a to Ces2h) genes exist in mice and the individual roles of the corresponding proteins are incompletely understood. Mouse Ces2c (mCes2c) is suggested as potential ortholog of human CES2. Therefore, we aimed at its structural and biophysical characterization. Here, we present the first crystal structure of mCes2c to 2.12 Å resolution. The overall structure of mCes2c resembles that of the human CES1 (hCES1). The core domain adopts an α/β hydrolase-fold with S230, E347, and H459 forming a catalytic triad. Access to the active site is restricted by the cap, the flexible lid, and the regulatory domain. The conserved gate (M417) and switch (F418) residues might have a function in product release similar as suggested for hCES1. Biophysical characterization confirms that mCes2c is a monomer in solution. Thus, this study broadens our understanding of the mammalian carboxylesterase family and assists in delineating the similarities and differences of the different family members.

  • Organizational Affiliation

    Institute of Molecular Biosciences, University of Graz, 8010 Graz, Austria.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Acylcarnitine hydrolase
A, B, C, D
561Mus musculusMutation(s): 0 
Gene Names: Ces2cCes2
EC: (PDB Primary Data), 3.1.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q91WG0 (Mus musculus)
Explore Q91WG0 
Go to UniProtKB:  Q91WG0
IMPC:  MGI:2385905
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ91WG0
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on NCA

Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
I [auth B]
J [auth B]
M [auth C]
F [auth A],
G [auth A],
I [auth B],
J [auth B],
M [auth C],
O [auth D]
C6 H6 N2 O
Query on SO4

Download Ideal Coordinates CCD File 
O4 S
Query on CL

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B],
L [auth C],
N [auth D]
Experimental Data & Validation

Experimental Data

  • Resolution: 2.12 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.163 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.052α = 90
b = 143.595β = 90
c = 183.756γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
Cootmodel building

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Austrian Science FundAustriaF73
Austrian Science FundAustriaDOC50

Revision History  (Full details and data files)

  • Version 1.0: 2022-11-16
    Type: Initial release
  • Version 1.1: 2022-11-23
    Changes: Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Refinement description