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New 15N NMR Exchange Experiments for the Unambiguous Assignment of 1HN/15N Resonances of Proteins in Complexes in Slow Chemical Exchange with Free Form

✍ Scribed by Catherine Vialle-Printems; Carine van Heijenoort; Eric Guittet


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
120 KB
Volume
142
Category
Article
ISSN
1090-7807

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✦ Synopsis


The potentialities of a 2D proton-detected heteronuclear exchange experiment to assign the nitrogen and amide proton resonances in a uniformly 15 N-enriched macromolecule involved in a complex, starting from the free form assignments, are demonstrated on a protein-DNA complex. This 2D experiment is further extended to a 3D experiment in the case of severe superpositions.