| Literature DB >> 20383561 |
Koh Takeuchi1, Dominique P Frueh, Zhen-Yu J Sun, Sebastian Hiller, Gerhard Wagner.
Abstract
We present a (13)C direct detection CACA-TOCSY experiment for samples with alternate (13)C-(12)C labeling. It provides inter-residue correlations between (13)C(alpha) resonances of residue i and adjacent C(alpha)s at positions i - 1 and i + 1. Furthermore, longer mixing times yield correlations to C(alpha) nuclei separated by more than one residue. The experiment also provides C(alpha)-to-sidechain correlations, some amino acid type identifications and estimates for psi dihedral angles. The power of the experiment derives from the alternate (13)C-(12)C labeling with [1,3-(13)C] glycerol or [2-(13)C] glycerol, which allows utilizing the small scalar (3)J(CC) couplings that are masked by strong (1)J(CC) couplings in uniformly (13)C labeled samples.Entities:
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Year: 2010 PMID: 20383561 PMCID: PMC2868269 DOI: 10.1007/s10858-010-9410-3
Source DB: PubMed Journal: J Biomol NMR ISSN: 0925-2738 Impact factor: 2.835