4CSK

human Aquaporin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.28 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.237 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Crystallization and Preliminary Crystallographic Analysis of Human Aquaporin 1 at a Resolution of 3.28 A.

Ruiz Carrillo, D.To Yiu Ying, J.Darwis, D.Soon, C.H.Cornvik, T.Torres, J.Lescar, J.

(2014) Acta Crystallogr Sect F Struct Biol Cryst Commun 70: 1657

  • DOI: https://doi.org/10.1107/S2053230X14024558
  • Primary Citation of Related Structures:  
    4CSK

  • PubMed Abstract: 

    Aquaporin water channels (AQPs) are found in almost every organism from humans to bacteria. In humans, 13 classes of AQPs control water and glycerol homeostasis. Knockout studies have suggested that modulating the activity of AQPs could be beneficial for the treatment of several pathologies. In particular, aquaporin 1 is a key factor in cell migration and angiogenesis, and constitutes a possible target for anticancer compounds and also for the treatment of glaucoma. Here, a preliminary crystallographic analysis at 3.28 Å resolution of crystals of human aquaporin 1 (hAQP1) obtained from protein expressed in Sf9 insect cells is reported. The crystals belonged to the tetragonal space group I422, with unit-cell parameters a = b = 89.28, c = 174.9 Å, and contained one monomer per asymmetric unit. The hAQP1 biological tetramer is generated via the crystallographic fourfold axis. This work extends previous electron crystallographic studies that used material extracted from human red blood cells, in which the resolution was limited to approximately 3.8 Å. It will inform efforts to improve lattice contacts and the diffraction limit for the future structure-based discovery of specific hAQP1 inhibitors.


  • Organizational Affiliation

    School of Biological Sciences, Nanyang Technological University, 61 Biopolis Drive, Singapore 138673, Singapore.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
AQUAPORIN-1292Homo sapiensMutation(s): 0 
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P29972 (Homo sapiens)
Explore P29972 
Go to UniProtKB:  P29972
PHAROS:  P29972
GTEx:  ENSG00000240583 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP29972
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.28 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.237 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.28α = 90
b = 89.28β = 90
c = 174.85γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2023-12-20
    Changes: Data collection, Database references, Other, Refinement description