Evidence map›Paper›PMID 21246256›Full record

ArticleJournal of biomolecular NMR2011

Uniform isotope labeling of a eukaryotic seven-transmembrane helical protein in yeast enables high-resolution solid-state NMR studies in the lipid environment.

Ying Fan, Lichi Shi, Vladimir Ladizhansky, Leonid S Brown

Abstract read
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In one paragraph

Article in Journal of biomolecular NMR, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

17 citing papers in PubMed, 45 citations in OpenAlex.

  1. A random fractionalMagnetic resonance letters · 2026
    Article
  2. Solid-State NMR Spectroscopy on Microbial Rhodopsins.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  3. Article
  4. Article
  5. Article
  6. Improved strategy for isoleucineJournal of biomolecular NMR · 2019
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. GdJournal of biomolecular NMR · 2017
    Article
  12. Article
  13. Membrane proteins in their native habitat as seen by solid-state NMR spectroscopy.Protein science : a publication of the Protein Society · 2015
    Review
  14. Article
  15. Advances in NMR structures of integral membrane proteins.Current opinion in structural biology · 2013
    Review
  16. Article
  17. 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

4 authors at 1 institution in 1 country.

Ying FanDepartment of Physics, University of Guelph, 50 Stone Road East, Guelph, ON, N1G 2W1, Canada.
Lichi Shi
Vladimir Ladizhansky
Leonid S Brown
University of Guelph · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Overexpression of isotope-labeled multi-spanning eukaryotic membrane proteins for structural NMR studies is often challenging. On the one hand, difficulties with achieving proper folding, membrane insertion, and native-like post-translational modifications frequently disqualify bacterial expression systems. On the other hand, eukaryotic cell cultures can be prohibitively expensive. One of the viable alternatives, successfully used for producing proteins for solution NMR studies, is yeast expression systems, particularly Pichia pastoris. We report on successful implementation and optimization of isotope labeling protocols, previously used for soluble secreted proteins, to produce homogeneous samples of a eukaryotic seven-transmembrane helical protein, rhodopsin from Leptosphaeria maculans. Even in shake-flask cultures, yields exceeded 5 mg of purified uniformly (13)C,(15)N-labeled protein per liter of culture. The protein was stable (at least several weeks at 5°C) and functionally active upon reconstitution into lipid membranes at high protein-to-lipid ratio required for solid-state NMR. The samples gave high-resolution (13)C and (15)N solid-state magic angle spinning NMR spectra, amenable to a detailed structural analysis. We believe that similar protocols can be adopted for challenging mammalian targets, which often resist characterization by other structural methods.

Indexed as

Fungal ProteinsIsotope LabelingLipidsMembrane ProteinsNuclear Magnetic Resonance, BiomolecularYeastsFungal ProteinsLipidsMembrane Proteins

Identifiers

PMID21246256
OpenAlexW1997759750

What OpenQuestion holds

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Registered trials

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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.