Abstract
Cyanobacteriochromes (CBCRs) are cyanobacterial photosensory proteins with a tetrapyrrole (bilin) chromophore that belong to the phytochrome superfamily. Like phytochromes, CBCRs photoconvert between two photostates with distinct spectral properties. NpR6012g4 from Nostoc punctiforme is a model system for widespread CBCRs with conserved red/green photocycles. Atomic-level structural information for the photoproduct state in this subfamily is not known. Here, we report NMR backbone chemical shift assignments of the light-activated state of NpR6012g4 (BMRB no. 26577) as a first step toward determining its atomic resolution structure.
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Acknowledgments
We thank Bennett Addison for technical support and help with NMR experiments. This work was supported by a grant from the Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science, United States Department of Energy (DOE DE-FG02-09ER16117 to J.C.L. and J.B.A.), with partial support for NMR time from NIH Grant RR11973 to the UC Davis NMR facility.
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Lim, S., Yu, Q., Rockwell, N.C. et al. 1H, 13C, and 15N chemical shift assignments of cyanobacteriochrome NpR6012g4 in the green-absorbing photoproduct state. Biomol NMR Assign 10, 157–161 (2016). https://doi.org/10.1007/s12104-015-9657-4
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DOI: https://doi.org/10.1007/s12104-015-9657-4