2OOL:
reference: Crystal structure of the chromophore binding domain of an unusual bacteriophytochrome, RpBphP3, reveals residues that modulate photoconversion., Yang X, Stojkovic EA, Kuk J, Moffat K, Proc Natl Acad Sci U S A. 2007 Jul 24;104(30):12571-6. Epub 2007 Jul 17. PMID: 17640891

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