Biological Assembly 1  

 3D View: Structure

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

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

Macromolecule Content

• Total Structure Weight: 28549.91 
• Atom Count: 1661 
• Residue Count: 269 
• Unique protein chains: 1

1FQY

STRUCTURE OF AQUAPORIN-1 AT 3.8 A RESOLUTION BY ELECTRON CRYSTALLOGRAPHY

• DOI: 10.2210/pdb1FQY/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens


• Deposited: 2000-09-07 Released: 2000-10-18 
• Deposition Author(s): Murata, K., Mitsuoka, K., Hirai, T., Walz, T., Agre, P., Heymann, J.B., Engel, A., Fujiyoshi, Y.

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Experimental Data Snapshot

• Method: ELECTRON CRYSTALLOGRAPHY
• Resolution: 3.8 Å
• Aggregation State: 2D ARRAY 
• Reconstruction Method: CRYSTALLOGRAPHY 

Literature

Structural determinants of water permeation through aquaporin-1.

Murata, K., Mitsuoka, K., Hirai, T., Walz, T., Agre, P., Heymann, J.B., Engel, A., Fujiyoshi, Y.

(2000) Nature 407: 599-605

• PubMed: 11034202 
• DOI: 10.1038/35036519


• PubMed Abstract: 
  

Human red cell AQP1 is the first functionally defined member of the aquaporin family of membrane water channels. Here we describe an atomic model of AQP1 at 3.8A resolution from electron crystallographic data. Multiple highly conserved amino-acid residues stabilize the novel fold of AQP1. The aqueous pathway is lined with conserved hydrophobic residues that permit rapid water transport, whereas the water selectivity is due to a constriction of the pore diameter to about 3 A over a span of one residue. The atomic model provides a possible molecular explanation to a longstanding puzzle in physiology-how membranes can be freely permeable to water but impermeable to protons.

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Organizational Affiliation: 

National Institute for Physiological Sciences, Okazaki, Japan.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
AQUAPORIN-1	A	269	Homo sapiens	Mutation(s): 0  Gene Names: AQP1 (CHIP28)
Membrane protein mpstruct	Group:  TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group:  Channels: Aquaporins and Glyceroporins	Protein:  AQP1 red blood cell aquaporin water channel
Find proteins for P29972 (Homo sapiens) Go to Gene View: AQP1 Go to UniProtKB:  P29972

Experimental Data & Validation

Experimental Data

• Method: ELECTRON CRYSTALLOGRAPHY
• Resolution: 3.8 Å
• Aggregation State: 2D ARRAY 
• Reconstruction Method: CRYSTALLOGRAPHY 

Software Package:

Software Name	Purpose
X-PLOR	refinement
LATLINE	phasing
CCP4	data scaling
LATLINE	model building

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-09-07 
• Released Date: 2000-10-18 
• Deposition Author(s): Murata, K., Mitsuoka, K., Hirai, T., Walz, T., Agre, P., Heymann, J.B., Engel, A., Fujiyoshi, Y.

Revision History 

• Version 1.0: 2000-10-18
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance
• Version 1.3: 2017-10-04
  Type: Refinement description