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Structure of FSD-1 (PDB: 1FSD). (A) For clarity, side chains of selected residues are shown. (B) The main-chain atoms in the β-hairpin of FSD-1 are shown colors and the hydrogen bonds between Y3 and F12 highlighted by black dashes. The α-helix is shown in light gray. Figures were generated using PyMOL (33). Sequence: QQYTAKIKGRTFRNEKELRDFIEKFKGR.
