Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 28.55 kDa 
• Atom Count: 1653 
• Residue Count: 225 
• Unique protein chains: 1

1H6I

A REFINED STRUCTURE OF HUMAN AQUAPORIN 1

• DOI: 10.2210/pdb1H6I/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2001-06-15 Released: 2001-12-13 
• Deposition Author(s): De Groot, B.L., Engel, A., Grubmuller, H.

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Experimental Data Snapshot

• Method: ELECTRON CRYSTALLOGRAPHY
• Resolution: 3.54 Å
• R-Value Free: 0.376 
• R-Value Work: 0.364 
• R-Value Observed: 0.364 

Literature

A Refined Structure of Human Aquaporin 1

De Groot, B.L., Engel, A., Grubmuller, H.

(2001) FEBS Lett 504: 206

• PubMed: 11532455 
• DOI: 10.1016/s0014-5793(01)02743-0
• Primary Citation of Related Structures:  
  1H6I


• PubMed Abstract: 
  

A refined structure of the human water channel aquaporin-1 is presented. The model rests on the high resolution X-ray structure of the homologous bacterial glycerol transporter GlpF, electron crystallographic data at 3.8 A resolution and a multiple sequence alignment of the aquaporin superfamily. The crystallographic R and free R values (36.7% and 37.8%) for the refined structure are significantly lower than for previous models. Improved geometry and enhanced stability in molecular dynamics simulations demonstrate a significant improvement of the aquaporin-1 structure. Comparison with previous aquaporin-1 models shows significant differences, not only in the loop regions, but also in the core of the water channel.

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Related Citations: 

• The Fold of Human Aquaporin 1
  De Groot, B.L., Heymann, J.B., Engel, A., Mitsuoka, K., Fujiyoshi, Y., Grubmuller, H.
  (2000) J Mol Biol 300: 987

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Organizational Affiliation: 

Max Planck Institute for Biophysical Chemistry, Theoretical Molecular Biophysics Group, Göttingen, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AQUAPORIN-1	A	269	Homo sapiens	Mutation(s): 0  Gene Names: AQP1, CHIP28
Find proteins for P29972 (Homo sapiens) Explore P29972  Go to UniProtKB:  P29972
NIH Common Fund Data Resources
PHAROS:  P29972 GTEx:  ENSG00000240583

Experimental Data & Validation

Experimental Data

• Method: ELECTRON CRYSTALLOGRAPHY
• Resolution: 3.54 Å
• R-Value Free: 0.376 
• R-Value Work: 0.364 
• R-Value Observed: 0.364 
• Space Group: P 4 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99.58	α = 90
b = 99.58	β = 90
c = 100	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-06-15 
• Released Date: 2001-12-13 
Deposition Author(s): De Groot, B.L., Engel, A., Grubmuller, H.

Revision History 

• Version 1.0: 2001-12-13
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance