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nmrlearner 09-07-2014 12:36 PM

Towards automatic protein backbone assignment using proton-detected 4D solid-state NMR data.
 
Towards automatic protein backbone assignment using proton-detected 4D solid-state NMR data.

Related Articles Towards automatic protein backbone assignment using proton-detected 4D solid-state NMR data.

J Biomol NMR. 2014 Sep 6;

Authors: Xiang S, Chevelkov V, Becker S, Lange A

Abstract
We introduce an efficient approach for sequential protein backbone assignment based on two complementary proton-detected 4D solid-state NMR experiments that correlate [Formula: see text]/Ni with CAi/COi or CAi-1/COi-1. The resulting 4D spectra exhibit excellent sensitivity and resolution and are amenable to (semi-)automatic assignment approaches. This strategy allows to obtain sequential connections with high confidence as problems related to peak overlap and multiple assignment possibilities are avoided. Non-uniform sampling schemes were implemented to allow for the acquisition of 4D spectra within a few days. Rather moderate hardware requirements enable the successful demonstration of the method on deuterated type III secretion needles using a 600 MHz spectrometer at a spinning rate of 25 kHz.


PMID: 25193427 [PubMed - as supplied by publisher]



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