Evidence map›Paper›PMID 21384999›Full record

ArticleThe Journal of chemical physics2011

Heteronuclear proton assisted recoupling.

Gaël De Paëpe, Józef R Lewandowski, Antoine Loquet, Matt Eddy, Simon Megy, Anja Böckmann, Robert G Griffin

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of chemical physics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.9field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 59 citations in OpenAlex.

  1. Article
  2. Review
  3. Homonuclear J-couplings and heteronuclear structural constraints.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2024
    Article
  4. Article
  5. Review
  6. Solid-State NMR Structure of Amyloid-β Fibrils.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  7. Review
  8. Article
  9. Pulsed Third-Spin-Assisted Recoupling NMR for Obtaining Long-RangeThe journal of physical chemistry. B · 2020
    Article
  10. EfficientThe journal of physical chemistry. B · 2018
    Article
  11. Journal of the American Chemical Society · 2017
    Article
  12. Proton-Assisted Recoupling (PAR) in Peptides and Proteins.The journal of physical chemistry. B · 2017
    Article
  13. Review
  14. Article
  15. Article
  16. Mechanism of dilute-spin-exchange in solid-state NMR.The Journal of chemical physics · 2014
    Article
  17. Article
  18. Higher order amyloid fibril structure by MAS NMR and DNP spectroscopy.Journal of the American Chemical Society · 2013
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Gaël De PaëpeDepartment of Chemistry and Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. gael.depaepe@cea.fr
Józef R Lewandowski
Antoine Loquet
Matt Eddy
Simon Megy
Anja Böckmann
Robert G Griffin
Centre National de la Recherche Scientifique · FRMassachusetts Institute of Technology · USUniversité Grenoble Alpes · FR

Funding

OverallP41EB002026 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI GRIFFIN, ROBERT GUY · 2003 to 2018
$17.9M
Solid State NMR Studies of Peptides and ProteinsR01EB003151 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI GRIFFIN, ROBERT GUY · 2004 to 2015
$6.5M
Solid State NMR Studies of Membrane ProteinsR01EB001960 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI GRIFFIN, ROBERT GUY · 2003 to 2017
$6.5M
NIBIB NIH HHS EB-002026NIBIB NIH HHS EB-003151NIBIB NIH HHS P41 EB002026NIBIB NIH HHS R01 EB001960NIBIB NIH HHS R01 EB003151
6 · The paper itself

Abstract

We describe a theoretical framework for understanding the heteronuclear version of the third spin assisted recoupling polarization transfer mechanism and demonstrate its potential for detecting long-distance intramolecular and intermolecular (15)N-(13)C contacts in biomolecular systems. The pulse sequence, proton assisted insensitive nuclei cross polarization (PAIN-CP) relies on a cross term between (1)H-(15)N and (1)H-(13)C dipolar couplings to mediate zero- and∕or double-quantum (15)N-(13)C recoupling. In particular, using average Hamiltonian theory we derive effective Hamiltonians for PAIN-CP and show that the transfer is mediated by trilinear terms of the form N(±)C(∓)H(z) (ZQ) or N(±)C(±)H(z) (DQ) depending on the rf field strengths employed. We use analytical and numerical simulations to explain the structure of the PAIN-CP optimization maps and to delineate the appropriate matching conditions. We also detail the dependence of the PAIN-CP polarization transfer with respect to local molecular geometry and explain the observed reduction in dipolar truncation. In addition, we demonstrate the utility of PAIN-CP in structural studies with (15)N-(13)C spectra of two uniformly (13)C,(15)N labeled model microcrystalline proteins-GB1, a 56 amino acid peptide, and Crh, a 85 amino acid domain swapped dimer (MW=2×10.4 kDa). The spectra acquired at high magic angle spinning frequencies (ω(r)∕2π>20 kHz) and magnetic fields (ω(0H)∕2π=700-900 MHz) using moderate rf fields, yield multiple long-distance intramonomer and intermonomer (15)N-(13)C contacts. We use these distance restraints, in combination with the available x-ray structure as a homology model, to perform a calculation of the monomer subunit of the Crh protein.

Indexed as

ProtonsQuantum TheoryProteinsProteinsProtons

Identifiers

PMID21384999
PMCPMC3064688
OpenAlexW1979297523

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.