Three-dimensional protein NMR TROSY-type (15)N-resolved (1)H(N)-(1)H(N) NOESY spectra with diagonal peak suppression.
An earlier two-dimensional NOESY experiment with diagonal peak suppression in the (1)H(N)-(1)H(N) region is extended to three dimensions by including (15)N evolution while maintaining the TROSY approach throughout. The technique suppresses all anti-TROSY resonances by appropriate pulse sequence elements and for large molecules at high fields possible semi- and anti-TROSY artifacts are further suppressed by virtue of much shorter transverse relaxation times for these components. The new technique is demonstrated using an (15)N-labeled protein sample, RAP 17-97 (N-terminal domain of alpha2-macroglobulin Receptor Associated Protein), in H(2)O at 500 MHz.
Meissner
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Department of Chemistry, Carlsberg Laboratory, Gamle Carlsberg Vej 10, Valby, DK-2500, Denmark.
SŁrensen
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D002352:Carrier Proteins / Q000737:chemistry; D006023:Glycoproteins / Q000737:chemistry; D026503:Low Density Lipoprotein Receptor-Related Protein-1; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D009587:Nitrogen Isotopes; D011971:Receptors, Immunologic; D011973:Receptors, LDL
D002352:Carrier Proteins; D006023:Glycoproteins; D026503:Low Density Lipoprotein Receptor-Related Protein-1; D009587:Nitrogen Isotopes; D011971:Receptors, Immunologic; D011973:Receptors, LDL