Evidence map›Paper›PMID 21715319›Full record

ArticleMolecular & cellular proteomics : MCP2011

Conformational transitions in the membrane scaffold protein of phospholipid bilayer nanodiscs.

Christopher R Morgan, Christine M Hebling, Kasper D Rand, Darrel W Stafford, James W Jorgenson, John R Engen

Abstract read
In one paragraph

Article in Molecular & cellular proteomics : MCP, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
–field-weighted citation impact
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

39 citing papers in PubMed.

  1. Article
  2. Article
  3. Cooperative transitions involving hydrophobic polyelectrolytes.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  4. Article
  5. Article
  6. Review
  7. Nanodiscs: A toolkit for membrane protein science.Protein science : a publication of the Protein Society · 2021
    Review
  8. Nanodiscs and Mass Spectrometry: Making Membranes Fly.International journal of mass spectrometry · 2020
    Article
  9. Article
  10. Article
  11. The hydrodynamic motion of Nanodiscs.Chemistry and physics of lipids · 2019
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  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

6 authors.

Christopher R MorganDepartment of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA.
Christine M Hebling
Kasper D Rand
Darrel W Stafford
James W Jorgenson
John R Engen

Funding

STRUCTURE/FUNCTION OF THE GAMMA GLUTAMYL CARBOXYLASER01HL048318 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI STAFFORD, DARREL W · 1992 to 2011
$3.4M
Protein conformational change upon membrane associationR01GM086507 · NIGMS · NORTHEASTERN UNIVERSITY · PI ENGEN, JOHN R · 2009 to 2012
$1.6M
NHLBI NIH HHS R01 HL048318NIGMS NIH HHS R01 GM086507
6 · The paper itself

Abstract

Phospholipid bilayer nanodiscs are model membrane systems that provide an environment where membrane proteins are highly stable and monodisperse without the use of detergents or liposomes. Nanodiscs consist of a discoidal phospholipid bilayer encircled by two copies of an amphipathic alpha helical membrane scaffold protein, which is modeled from apolipoprotein A-1. Hydrogen exchange mass spectrometry was used to probe the structure and dynamics of the scaffold protein in the presence and absence of lipid. On nanodisc self-assembly, the entire scaffold protein gained significant protection from exchange, consistent with a large, protein-wide, structural rearrangement. This protection was short-lived and the scaffold protein was highly deuterated within 2 h. Several regions of the scaffold protein, in both the lipid-free and lipid-associated states, displayed EX1 unfolding kinetics. The rapid deuteration of the scaffold protein and the presence of correlated unfolding events both indicate that nanodiscs are dynamic rather than rigid bodies in solution. This work provides a catalog of the expected scaffold protein peptic peptides in a nanodisc-hydrogen exchange mass spectrometry experiment and their deuterium uptake signatures, data that can be used as a benchmark to verify correct assembly and nanodisc structure. Such reference data will be useful control data for all hydrogen exchange mass spectrometry experiments involving nanodiscs in which transmembrane or lipid-associated proteins are the primary molecule(s) of interest.

Indexed as

1,2-DipalmitoylphosphatidylcholineApolipoprotein A-IDeuteriumDeuterium Exchange MeasurementHumansHydrogenKineticsLipid BilayersMass SpectrometryMembrane ProteinsMembranes, ArtificialModels, MolecularMolecular ConformationNanostructuresPhospholipidsProtein Structure, Secondary1,2-DipalmitoylphosphatidylcholineApolipoprotein A-IDeuteriumHydrogenLipid BilayersMembrane ProteinsMembranes, ArtificialPhospholipidsRecombinant ProteinsSolutions

Identifiers

PMID21715319
PMCPMC3186204

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.