Abstract
We present the backbone and sidechain NMR assignments and a structural analysis of the 178-residue wild-type γS-crystallin and the cataract-related point mutant, γS-G18V. γS-crystallin is a structural component of the eye lens, which maintains its solubility and stability over many years. NMR assignments and continued structural investigations of γS-crystallin and aggregation-prone variants will advance understanding of cataract formation.
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
Baraguey C, Skouri-Panet F, Bontems F, Tardieu A, Chassaing G, Lequin O (2004) 1H, 15N and 13C resonance assignment of human gammaS-crystallin, a 21 kDa eye-lens protein. J Biomol NMR 30:385–386
Brubaker WD, Freites JA, Golchert KJ, Shapiro RA, Morikis V, Tobias DJ, Martin RW (2011) Separating instability from aggregation propensity in gammaS-crystallin variants. Biophys J 100(2):498–506
Delaglio F, Grzesiek S, Vuister G, Zhu G, Pfeifer J, Bax A (1995) NMRPipe: a multidimensional spectral processing system based on UNIX pipes. J Biomol NMR 6:277–293
Goddard TD, Kneller DG (2011) SPARKY 3. University of California, San Francisco
Horwitz J (1992) Alpha-crystallin can function as a molecular chaperone. Proc Natl Acad Sci USA 89(21):10,449–10,453
Jehle S, Rajagopal P, Bardiaux B, Markovic S, Kühne R, Stout JR, Higman VA, Klevit RE, van Rossum BJ, Oschkinat H (2010) Solid-state NMR and SAXS studies provide a structural basis for the activation of alpha B-crystallin oligomers. Nat Struct Mol Biol 17:1037–1043
Kupce E, Freeman R (1995) Adiabatic pulses for wide-band inversion and broad-band decoupling. J Magn Reson A 115:273–276
Ma Z, Piszczek G, Wingfield P, Sergeev Y, Hejtmancik J (2009) The G18V CRYGS mutation associated with human cataracts increases gammaS-crystallin sensitivity to thermal and chemical stress. Biochemistry 48:7334–7341
Mahler B, Doddapaneni K, Kleckner I, Yuan C, Wistow G, Wu Z (2011) Characterization of a transient unfolding intermediate in a core mutant of γS-crystallin. J Mol Biol 405:840–850
Shaka A, Barker PB, Freeman R (1985) Computer-optimized decoupling scheme for wideband applications and low-level operation. J Magn Reson 64:547–552
Sun H, Ma Z, Li Y, Liu B, Li Z, Ding X, Gao Y, Ma W, Tang X, Li X, Shen Y (2005) Gamma-S crystallin gene (CRYGS) mutation causes dominant progressive cortical cataract in humans. J Med Genet 42(9):706–710
Tanaka N, Tanaka R, Tokuhara M, Kunugi S, Lee Y, Hamada D (2008) Amyloid fibril formation and chaperone-like activity of peptides from alpha-crystallin. Biochemistry 47(9):2961–2967
Wang X, Garcia CM, Shui YB, Beebe DC (2004) Expression and regulation of alpha-, beta-, and gamma-crystallins in mammalian lens epithelial cells. Invest Ophthalmol Vis Sci 45:3608–3619
Wu Z, Delaglio F, Wyatt K, Wistow G, Bax A (2005) Solution structure of (gamma)S crystallin by molecular fragment replacement NMR. Protein Sci 14(12):2142–2143
Acknowledgements
The authors thank Melanie Cocco and AJ Shaka for helpful discussions and Evgeny Fadeev for excellent NMR facility management. This work was supported by NSF-CAREER CHE-0847375 and NIH RO1GM-78528.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Brubaker, W.D., Martin, R.W. 1H, 13C, and 15N assignments of wild-type human γS-crystallin and its cataract-related variant γS-G18V. Biomol NMR Assign 6, 63–67 (2012). https://doi.org/10.1007/s12104-011-9326-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12104-011-9326-1