A refined structure of human aquaporin-1.
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de Groot BL, Engel A, Grubmuller H
A refined structure of human aquaporin-1.
FEBS Lett. 2001 Aug 31;504(3):206-11.
- PubMed ID
- 11532455 [ View in 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.