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4D non-uniformly sampled HCBCACON and ¹J(NCα)-selective HCBCANCO experiments for the sequential assignment and chemical shift analysis of intrinsically disordered proteins
J. Nováček, NY. Haba, JH. Chill, L. Zídek, V. Sklenář,
Language English Country Netherlands
Document type Journal Article, Research Support, Non-U.S. Gov't
NLK
ProQuest Central
from 1997-01-01 to 1 year ago
Medline Complete (EBSCOhost)
from 2000-01-01 to 1 year ago
Health & Medicine (ProQuest)
from 1997-01-01 to 1 year ago
- MeSH
- Carbon Isotopes chemistry MeSH
- Molecular Sequence Data MeSH
- Nuclear Magnetic Resonance, Biomolecular methods MeSH
- Proline chemistry MeSH
- Proteins chemistry MeSH
- Protein Structure, Secondary MeSH
- Amino Acid Sequence MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
A pair of 4D NMR experiments for the backbone assignment of disordered proteins is presented. The experiments exploit (13)C direct detection and non-uniform sampling of the indirectly detected dimensions, and provide correlations of the aliphatic proton (H(α), and H(β)) and carbon (C(α), C(β)) resonance frequencies to the protein backbone. Thus, all the chemical shifts regularly used to map the transient secondary structure motifs in the intrinsically disordered proteins (H(α), C(α), C(β), C', and N) can be extracted from each spectrum. Compared to the commonly used assignment strategy based on matching the C(α) and C(β) chemical shifts, inclusion of the H(α) and H(β) provides up to three extra resonance frequencies that decrease the chance of ambiguous assignment. The experiments were successfully applied to the original assignment of a 12.8 kDa intrinsically disordered protein having a high content of proline residues (26 %) in the sequence.
References provided by Crossref.org
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- $a A pair of 4D NMR experiments for the backbone assignment of disordered proteins is presented. The experiments exploit (13)C direct detection and non-uniform sampling of the indirectly detected dimensions, and provide correlations of the aliphatic proton (H(α), and H(β)) and carbon (C(α), C(β)) resonance frequencies to the protein backbone. Thus, all the chemical shifts regularly used to map the transient secondary structure motifs in the intrinsically disordered proteins (H(α), C(α), C(β), C', and N) can be extracted from each spectrum. Compared to the commonly used assignment strategy based on matching the C(α) and C(β) chemical shifts, inclusion of the H(α) and H(β) provides up to three extra resonance frequencies that decrease the chance of ambiguous assignment. The experiments were successfully applied to the original assignment of a 12.8 kDa intrinsically disordered protein having a high content of proline residues (26 %) in the sequence.
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