1YRX:
reference: Structure of a Novel Photoreceptor, the BLUF Domain of AppA from Rhodobacter sphaeroides(,)., Anderson S, Dragnea V, Masuda S, Ybe J, Moffat K, Bauer C, Biochemistry 2005 Jun 7;44(22):7998-8005. PMID: 15924418

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