Crystal structure of human AQP10

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


Human adipose glycerol flux is regulated by a pH gate in AQP10.

Gotfryd, K.Mosca, A.F.Missel, J.W.Truelsen, S.F.Wang, K.Spulber, M.Krabbe, S.Helix-Nielsen, C.Laforenza, U.Soveral, G.Pedersen, P.A.Gourdon, P.

(2018) Nat Commun 9: 4749-4749

  • DOI: https://doi.org/10.1038/s41467-018-07176-z
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Obesity is a major threat to global health and metabolically associated with glycerol homeostasis. Here we demonstrate that in human adipocytes, the decreased pH observed during lipolysis (fat burning) correlates with increased glycerol release and stimulation of aquaglyceroporin AQP10. The crystal structure of human AQP10 determined at 2.3 Å resolution unveils the molecular basis for pH modulation-an exceptionally wide selectivity (ar/R) filter and a unique cytoplasmic gate. Structural and functional (in vitro and in vivo) analyses disclose a glycerol-specific pH-dependence and pinpoint pore-lining His80 as the pH-sensor. Molecular dynamics simulations indicate how gate opening is achieved. These findings unravel a unique type of aquaporin regulation important for controlling body fat mass. Thus, targeting the cytoplasmic gate to induce constitutive glycerol secretion may offer an attractive option for treating obesity and related complications.

  • Organizational Affiliation

    University of Copenhagen, Department of Biomedical Sciences, Nørre Allé 14, DK-2200, Copenhagen N, Denmark.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
301Homo sapiensMutation(s): 0 
Gene Names: AQP10
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q96PS8 (Homo sapiens)
Explore Q96PS8 
Go to UniProtKB:  Q96PS8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96PS8
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on BNG

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
J [auth B]
K [auth B]
E [auth A],
F [auth A],
G [auth A],
J [auth B],
K [auth B],
L [auth B],
M [auth B],
N [auth B],
O [auth B],
R [auth C],
S [auth C],
T [auth C],
U [auth C],
W [auth D],
X [auth D],
Y [auth D]
nonyl beta-D-glucopyranoside
C15 H30 O6
Query on GOL

Download Ideal Coordinates CCD File 
H [auth A]
I [auth A]
P [auth B]
Q [auth B]
V [auth C]
H [auth A],
I [auth A],
P [auth B],
Q [auth B],
V [auth C],
Z [auth D]
C3 H8 O3
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.071α = 90
b = 116.844β = 90
c = 138.549γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-11-21
    Type: Initial release
  • Version 1.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary