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Welcome to the relax Wiki.
The community-run support site for relax, a program for the study of molecular dynamics using experimental NMR data.
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News & Updates
Gna! is permanently shut down! A migration to another open source infrastructure is planned. This will include web hosting for, source code repositories, bug and other trackers, new reports, download pages, and possible a svn to git conversion.
Tutorial added Tutorial for sorting data stored as numpy to on-resonance R1rho analysis
Version 4 of relax With the latest relax release merging in years of developments in the frame order analysis, the major number has been incremented to relax 4.
Tutorial added Tutorial for manual regarding the relaxation dispersion auto-analysis in the GUI
Tutorial added Tutorial for R1/R2 Relaxation curve-fitting analysis on varian recorded as fid interleaved
Matplotlib example added Matplotlib example
Tutorial added Relaxation dispersion analysis R1_rho recorded on varian
Tutorial added Relaxation dispersion analysis cpmg fixed time recorded on varian as fid interleaved
Tutorial added Adding relaxation dispersion models to relax
wiki namespace changed The wiki is now placed at: as of 19 of July 2013
GPL License The License has been changed to GPL v3.
New Wiki This is the new wiki
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Relax releases/references

All references for the relax release notes, in Harvard References extension style:

  • [*Baldwin 2014] Baldwin A. J. (2014). An exact solution for R2,eff in CPMG experiments in the case of two site chemical exchange. J. Magn. Reson., 244, 114-124. (DOI: 10.1016/j.jmr.2014.02.023)
  • [*Bieri et al, 2011] Bieri, M., d'Auvergne, E., and Gooley, P. (2011). relaxGUI: a new software for fast and simple NMR relaxation data analysis and calculation of ps-ns and μs motion of proteins. J. Biomol. NMR, 50, 147-155. (DOI: 10.1007/s10858-011-9509-1)
  • [*Carver and Richards 1972] Carver, J. P. and Richards, R. E. (1972). General 2-site solution for chemical exchange produced dependence of T2 upon Carr-Purcell pulse separation. J. Magn. Reson., 6(1), 89-105. (DOI: 10.1016/0022-2364(72)90090-X)
  • [*d'Auvergne and Gooley 2006] d'Auvergne, E. J. and Gooley, P. R. (2006). Model-free model elimination: A new step in the model-free dynamic analysis of NMR relaxation data. J. Biomol. NMR, 35(2), 117-135. (DOI: 10.1007/s10858-006-9007-z)
  • [*d'Auvergne and Gooley, 2007] d'Auvergne, E. J. and Gooley, P. R. (2007). Set theory formulation of the model-free problem and the diffusion seeded model-free paradigm. Mol. BioSyst., 3(7), 483-494. (DOI: 10.1039/b702202f)
  • [*d'Auvergne and Gooley, 2008a] d'Auvergne, E. J. and Gooley, P. R. (2008). Optimisation of NMR dynamic models I. Minimisation algorithms and their performance within the model-free and Brownian rotational diffusion spaces. J. Biomol. NMR, 40(2), 107-119. (DOI: 10.1007/s10858-007-9214-2)
  • [*d'Auvergne and Gooley, 2008b] d'Auvergne, E. J. and Gooley, P. R. (2008). Optimisation of NMR dynamic models II. A new methodology for the dual optimisation of the model-free parameters and the Brownian rotational diffusion tensor. J. Biomol. NMR, 40(2), 121-133. (DOI: 10.1007/s10858-007-9213-3)
  • [*d'Auvergne and Gooley, 2008] d'Auvergne, E. J. and Gooley, P. R. (2008). Optimisation of NMR dynamic models. J. Biomol. NMR, 40(2), 107-133. (DOI: 10.1007/s10858-007-9214-2, 10.1007/s10858-007-9213-3)
  • [*Davis et al., 1994] Davis, D. G., Perlman, M. E., and London, R. E. (1994). Direct measurements of the dissociation-rate constant for inhibitor-enzyme complexes via the T1rho and T2 (CPMG) methods. J. Magn. Reson., 104(3), 266-275. (DOI: 10.1006/jmrb.1994.1084)
  • [*Fushman et al., 1998] Fushman, D., Tjandra, N., and Cowburn, D. (1998). Direct measurement of 15N chemical shift anisotropy in solution. J. Am. Chem. Soc., 120(42), 10947-10952. (DOI: 10.1021/ja981686m)
  • [*Ishima and Torchia 2005] Ishima, R. and Torchia, D. A. (1999). Estimating the time scale of chemical exchange of proteins from measurements of transverse relaxation rates in solution. J. Biomol. NMR, 14(4), 369-372. (DOI: 10.1023/A:1008324025406)
  • [*Luz and Meiboom 1963] Luz, Z. and Meiboom, S. (1963). Nuclear magnetic resonance study of protolysis of trimethylammonium ion in aqueous solution - order of reaction with respect to solvent. J. Chem. Phys., 39(2), 366-370. (DOI: 10.1063/1.1734254)
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Random screenshots
relax starting interface
The analysis selection wizard
Steady-state NOE analysis
R1 analysis
R2 analysis
Model-free analysis
The relax controller
Spin viewer window
Results viewer window
Pipe editor window
relax prompt window
About GUI screen
About relax screen