3W2Z:
reference: Structures of cyanobacteriochromes from phototaxis regulators AnPixJ and TePixJ reveal general and specific photoconversion mechanism., Narikawa R, Ishizuka T, Muraki N, Shiba T, Kurisu G, Ikeuchi M, Proc Natl Acad Sci U S A. 2013 Jan 15;110(3):918-23. doi:, 10.1073/pnas.1212098110. Epub 2012 Dec 19. PMID: 23256156

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