Measurement of homonuclear proton couplings from regular 2D COSY spectra.
An interactive computer procedure is described which determines (1)H--(1)H couplings from fitting the cross-peak multiplets in regular phase-sensitive COSY spectra. The robustness and simplicity of the method rely on the fact that a given cross-peak intensity is not an independent variable in the fitting procedure, making it possible to measure couplings accurately even from individual cross peaks with unresolved multiplet structure.
Delaglio
F
F
Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
Wu
Z
Z
Bax
A
A
D003196:Computer Graphics; D005583:Fourier Analysis; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D011522:Protons; D012815:Signal Processing, Computer-Assisted; D012984:Software; D014452:Ubiquitins / Q000737:chemistry*
D011522:Protons; D014452:Ubiquitins