Salewski, J., Velazquez, F., Kaminski, S., von Stetten, D., Keidel, A., Rippers, Y., Michael, N., Scheerer, P., Piwowarski, P., Bartl, F., Frankenberg-Dinkel, N., Ringsdorf, S., Gärtner, W., Lamparter, T., Mroginski, M. A. and Hildebrandt, P. (2013). The structure of the biliverdin cofactor in the Pfr state of bathy and prototypical phytochromes. Journal of Biological Chemistry, 16800-16814.