Abstract
Dehydrins are a class of stress proteins that belong to the family of Late Embryogenesis Abundant (LEA) proteins in plants, so named because they are highly expressed in late stages of seed formation. In somatic cells, their expression is very low under normal conditions, but increases critically upon dehydration elicited by water stress, high salinity or cold. Dehydrins are thought to be intrinsically disordered proteins, which represents a challenge in understanding their structure–function relationship. Herein we present the backbone 1H, 15N and 13C NMR assignment of the 185 amino acid long ERD14 (Early Response to Dehydration 14), which is a K3S-type, typical dehydrin of A. thaliana. Secondary chemical shifts as well as NMR relaxation data show that ERD14 is fully disordered under near native conditions, with short regions of somewhat restricted motion and 5–25% helical propensity. These results suggest that ERD14 may have partially preformed elements for functional interaction with its partner(s) and set the stage for further detailed structural and functional studies of ERD14 both in vitro and in vivo.
Similar content being viewed by others
References
Aswad DW, Paranandi MV, Schurter BT (2000) Isoaspartate in peptides and proteins: formation, significance, and analysis. J Pharm Biomed Anal 21:1129–1136
Bokor M, Csizmók V, Kovács D, Bánki P, Friedrich P, Tompa P, Tompa K (2005) NMR relaxation studies on the hydrate layer of intrinsically unstructured proteins. Biophys J 88:2030–2037
Braun D, Wider G, Wüthrich K (1994) Sequence-corrected 15N “random coil” chemical shifts. J Am Chem Soc 116:8466–8469
Chatterjee A, Kumar A, Chugh J, Srivastava S, Bhavesh N, Hosur R (2005) NMR of unfolded proteins. J Chem Sci 117:3–21
Close TJ (1996) Dehydrins: emergence of a biochemical role of a family of plant dehydration proteins. Physiol Plant 97:795–803
Dyson HJ, Wright PE (2004) Unfolded proteins and protein folding studied by NMR. Chem Rev 104:3607–3622
Findlater EE, Graether SP (2009) NMR assignments of the intrinsically disordered K2 and YSK2 dehydrins. Biomol NMR Assignments 3:273–275
Fuxreiter M, Simon I, Friedrich P, Tompa P (2004) Preformed structural elements feature in partner recognition by intrinsically unstructured proteins. J Mol Biol 338:1015–1026
Fuxreiter M, Tompa P, Simon I (2007) Structural disorder imparts plasticity on linear motifs. Bioinformatics 23:950–956
Goddard TD, Kneller DG SPARKY 3. University of California, San Francisco. http://www.cgl.ucsf.edu/home/sparky/
Hundertmark M, Hincha DK (2008) LEA (Late Embryogenesis Abundant) proteins and their encoding genes in Arabidopsis thaliana. BMC Genomics 9:118
Keller RLJ (2004) The computer aided resonance assignment tutorial. CANTINA Verlag, Goldau, Switzerland
Kim S, Nam K (2010) Physiological roles of ERD10 in abiotic stresses and seed germination of Arabidopsis. Plant Cell Rep 29:203–209
Kiyosue T, Yamaguchi-Shinozaki K, Shinozaki K (1994a) Cloning of cDNAs for genes that are early-responsive to dehydration stress (ERDs) in Arabidopsis thaliana L.: identification of three ERDs as HSP cognate genes. Plant Mol Biol 25:791–798
Kiyosue T, Yamaguchi-Shinozaki K, Shinozaki K (1994b) Characterization of two cDNAs (ERD10 and ERD14) corresponding to genes that respond rapidly to dehydration stress in Arabidopsis thaliana. Plant Cell Physiol 35:225–231
Kovacs D, Kalmar E, Torok Z, Tompa P (2008a) Chaperone activity of ERD10 and ERD14, two disordered stress-related plant proteins. Plant Physiol 147:381–390
Kovacs D, Agoston B, Tompa P (2008b) Disordered plant LEA proteins as molecular chaperones. Plant Signaling Behav 3:710–713
Löhr F, Rüterjans H (1998) Detection of nitrogen-nitrogen J-couplings in proteins. J Magn Reson 132:130–137
Löhr F, Pfeiffer S, Lin Y, Hartleib J, Klimmek O, Rüterjans H (2000) HNCAN pulse sequences for sequential backbone resonance assignment across proline residues in perdeuterated proteins. J Biomol NMR 18:337–346
Marley J, Lu M, Bracken C (2001) A method for efficient isotopic labeling of recombinant proteins. J Biomol NMR 20:71–75
Mohan A, Oldfield CJ, Radivojac P, Vacic V, Cortese MS, Dunker AK, Uversky VN (2006) Analysis of molecular recognition features (MoRFs). J Mol Biol 362:1043–1059
Nylander M, Svensson J, Palva ET, Welin BV (2001) Stress-induced accumulation and tissue-specific localization of dehydrins in Arabidopsis thaliana. Plant Mol Biol 45:263–279
Rorat T (2006) Plant dehydrins–tissue location, structure and function. Cell Mol Biol Lett 11:536–556
Shinozaki K, Yamaguchi-Shinozaki K (1996) Molecular responses to drought and cold stress. Curr Opin Biotechnol 7:161–167
Tompa P (2002) Intrinsically unstructured proteins. Trends Biochem Sci 27:527–533
Tompa P (2005) The interplay between structure and function in intrinsically unstructured proteins. FEBS Lett 579:3346–3354
Tompa P (2009) Structure and function of intrinsically disordered proteins. CRC Press, Boca Raton
Tompa P, Kovacs D (2010) Intrinsically disordered chaperones in plants and animals. Biochem Cell Biol 88:167–174
Tompa P, Szasz C, Buday L (2005) Structural disorder throws new light on moonlighting. Trends Biochem Sci 30:484–489
Tompa P, Bánki P, Bokor M, Kamasa P, Kovács D, Lasanda G, Tompa K (2006) Protein-water and protein-buffer interactions in the aqueous solution of an intrinsically unstructured plant dehydrin: NMR intensity and DSC aspects. Biophys J 91:2243–2249
Uversky VN (2002) Natively unfolded proteins: a point where biology waits for physics. Protein Sci 11:739–756
Welin BV, Olson A, Nylander M, Palva ET (1994) Characterization and differential expression of dhn/lea/rab-like genes during cold acclimation and drought stress in Arabidopsis thaliana. Plant Mol Biol 26:131–144
Wishart DS, Bigam CG, Holm A, Hodges RS, Sykes BD (1995) 1H, 13C and 15N random coil NMR chemical shifts of the common amino acids. I. Investigations of nearest-neighbor effects. J Biomol NMR 5:67–81
Wright PE, Dyson HJ (2009) Linking folding and binding. Curr Opin Struct Biol 19:31–38
Acknowledgments
This research was supported by the grant of the Hungarian Scientific Research Fund (OTKA; NK71582, K72973 and NI-68466) and ICGEB (CRP/HUN08-03). The European Union and the European Social Fund have provided financial support to the project under the grant agreement no. TÁMOP 4.2.1./B-09/KMR-2010-0003. Financial support by the Access to Research Infrastructures activity in the 6th Framework Programme of the EC (Contract # RII3-026145, EU-NMR), the technical assistance with and the measurements of the NMR spectra by F. Löhr are also gratefully acknowledged.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Szalainé Ágoston, B., Kovács, D., Tompa, P. et al. Full backbone assignment and dynamics of the intrinsically disordered dehydrin ERD14. Biomol NMR Assign 5, 189–193 (2011). https://doi.org/10.1007/s12104-011-9297-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12104-011-9297-2