... (http://www.rcsb.org/pdb/index.html).(Received 29 January 20 04, revised 16 March 20 04, accepted 23 March 20 04) Eur. J. Biochem. 271, 1938–1951 (20 04) Ó FEBS 20 04 doi:10.1111/j. 143 2-1033.20 04. 041 04. xAlthough ... 40 , 8 945 –89 54. 23. Sorgen, P.L., Hu, Y., Guan, L., Kaback, H.R. & Girvin, M.E.(2002) An approach to membrane protein structure withoutcrystals. Proc. Natl Acad. Sci. USA 99, 140 37– 140 40. 24. ... pore-formingmechanism. FEBS Lett. 512, 47 –51.Supplementary materialThe following material is available from http://blackwellpublishing.com/products/journals/suppmat/EJB/EJB41 04/ EJB4104sm.htmTable S1. Chemical...