Biomolecular NMR Assignments

, Volume 12, Issue 2, pp 237–242 | Cite as

Partial solid-state NMR 1H, 13C, 15N resonance assignments of a perdeuterated back-exchanged seven-transmembrane helical protein Anabaena Sensory Rhodopsin

  • David Bolton
  • Leonid S. Brown
  • Vladimir Ladizhansky


Anabaena Sensory Rhodopsin (ASR) is a unique photochromic membrane-embedded photosensor which interacts with soluble transducer and is likely involved in a light-dependent gene regulation in the cyanobacterium Anabaena sp. PCC 7120. We report partial spectroscopic 1H, 13C and 15N assignments of perdeuterated and back-exchanged ASR reconstituted in lipids. The reported assignments are in general agreement with previously determined assignments of carbon and nitrogen resonances in fully protonated samples. Because the back-exchange was performed on ASR in a detergent-solubilized state, the location of detected residues reports on the solvent accessibility of ASR in detergent. A comparison with the results of previously published hydrogen/exchange data collected on the ASR reconstituted in lipids, suggests that the protein has larger solvent accessible surface in the detergent-solubilized state.


Anabaena Sensory Rhodopsin Magic-angle spinning Solid-state NMR Chemical shifts Solvent accessibility. 



This research was supported by NSERC Discovery Grants to L.S.B. (RGPIN-2013-250202) and V.L. (RGPIN-2014-04547), Canada Foundation of Innovation, and Ontario Ministry of Research and Innovation.

Compliance with Ethical Standards

Conflict of interest

The authors declare no competing financial interests.

Supplementary material

12104_2018_9815_MOESM1_ESM.pdf (4.1 mb)
Supplementary material 1 (PDF 4218 KB)


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© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Physics and Biophysics Interdepartmental GroupUniversity of GuelphGuelphCanada

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