A Refined Structure of Human Aquaporin 1De Groot, B.L., Engel, A., Grubmuller, H.
(2001) FEBS Lett 504: 206
- PubMed: 11532455
- DOI: https://doi.org/10.1016/s0014-5793(01)02743-0
- Primary Citation of Related Structures:
- 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.
Max Planck Institute for Biophysical Chemistry, Theoretical Molecular Biophysics Group, Göttingen, Germany.