Structure
The structure of the protein has been solved by X-ray crystallography and is deposited in the PDB as id code 7ahl. Seven monomers each contribute a long beta-hairpin to a fourteen stranded beta barrel that forms a pore in the cell membrane. This pore is 14 Ångström wide at its narrowest point.
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“Each structure and institution here was so primitive that you could at once refer it to its source; but our buildings commonly suggest neither their origin nor their purpose.”
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—Donald Davidson (b. 1917)