Purdue News PhotosPurdue News Photos
11/03-- Shown in this graphic is the protein colicin and the receptors it uses to cross the cellular membrane of an E. coli bacterium. After lodging one of its ends in the "BtuB" receptor, usually used to admit vitamin B12 into the cell, the protein uses its extended "fishing pole" to search for a porous second receptor, "OmpF," that will allow its import across the membrane. (Kurisu et al., Nature Structural Biology, 2003).
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(Kurisu et al., Nature Structural Biology, 2003)
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