1J4N

Crystal Structure of the AQP1 water channel

• PDB DOI: https://doi.org/10.2210/pdb1J4N/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Bos taurus
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2001-10-19 Released: 2002-03-27 
• Deposition Author(s): Sui, H., Han, B.-G., Lee, J.K., Walian, P., Jap, B.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.308 
• R-Value Work: 0.266 

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly 2  

Global Symmetry: Dihedral - D4  (Explore in 3D)
Global Stoichiometry: Homo 8-mer - A8 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 29.74 kDa 
• Atom Count: 2,029 
• Modelled Residue Count: 249 
• Deposited Residue Count: 271 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AQUAPORIN 1	A	271	Bos taurus	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for P47865 (Bos taurus) Explore P47865  Go to UniProtKB:  P47865

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BNG	B [auth A], C [auth A], D [auth A]	nonyl beta-D-glucopyranoside C15 H30 O6 QFAPUKLCALRPLH-UXXRCYHCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.308 
• R-Value Work: 0.266 
• Space Group: I 4 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 93.331	α = 90
b = 93.331	β = 90
c = 180.49	γ = 90

Software Package:

Software Name	Purpose
SOLVE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-03-27 
Deposition Author(s): Sui, H., Han, B.-G., Lee, J.K., Walian, P., Jap, B.K.

Revision History  

• Version 1.0: 2002-03-27
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 1.4: 2023-12-27
  Changes: Data collection, Database references, Structure summary