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Photoactive Yellow Protein and XFEL/SFX

Structures of photoactive yellow protein were determined by serial femtosecond crystallography after illumination, capturing the isomerization of the chromophore after it absorbs light. Structures included in this movie include: 5hd3 (ground state), 5hdc (100-400 femtoseconds after illumination), 5hdd, 5hds (3 picoseconds), 4b9o (100 picoseconds), 5hd5 (200 nanoseconds) and 1ts0 (1 millisecond). For more, see the Molecule of the Month on Photoactive Yellow Protein and Guide to Understanding PDB Data: Methods for Determining Atomic Structures.