Evidence map›Paper›PMID 15653730›Full record

ArticleBiophysical journal2005

The 3-hydroxy group and 4,5-trans double bond of sphingomyelin are essential for modulation of galactosylceramide transmembrane asymmetry.

Barbara Malewicz, Jacob T Valiyaveettil, Kochurani Jacob, Hoe-Sup Byun, Peter Mattjus, Wolfgang J Baumann, Robert Bittman, Rhoderick E Brown

Abstract read
In one paragraph

Article in Biophysical journal, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Glycolipid transfer proteins.Biochimica et biophysica acta · 2007
    Review
  11. 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

8 authors.

Barbara MalewiczUniversity of Minnesota, Hormel Institute, Austin, Minnesota 55912, USA.
Jacob T Valiyaveettil
Kochurani Jacob
Hoe-Sup Byun
Peter Mattjus
Wolfgang J Baumann
Robert Bittman
Rhoderick E Brown

Funding

GLYCOLIPID TRANSFER--REGULATION BY MEMBRANE INTERFACESR01GM045928 · NIGMS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI BROWN, RHODERICK E · 1992 to 2014
$4.8M
STRUCTURAL PROPERTIES OF MEMBRANESR01HL016660 · NHLBI · QUEENS COLLEGE · PI BITTMAN, ROBERT · 1985 to 2003
$1.4M
STRUCTURAL PROPERTIES OF MEMBRANESR37HL016660 · NHLBI · QUEENS COLLEGE · PI BITTMAN, ROBERT · 1986 to 1995
–
NUCLEAR MAGNETIC RESONANCE SPECTROMETERS10RR004654 · NCRR · UNIVERSITY OF MINNESOTA TWIN CITIES · PI BAUMANN, WOLFGANG J · 1989 to 1989
–
NCRR NIH HHS RR-04654NHLBI NIH HHS HL16660NIGMS NIH HHS GM45928NIGMS NIH HHS R01 GM045928
6 · The paper itself

Abstract

The structural features of SPM that control the transbilayer distribution of beta-GalCer in POPC vesicles were investigated by (13)C- and (31)P-NMR spectroscopy using lipid analogs that share physical similarities with GalCer or SPM. The SPM analogs included N-palmitoyl-4,5-dihydro-SPM, 3-deoxy-SPM, 1-alkyl-2-amidophosphatidylcholine, and dipalmitoylphosphatidylcholine, a popular model "raft lipid". The transbilayer distributions of the SPM analogs and SPM in POPC vesicles were similar by (31)P-NMR. To observe the dramatic change in GalCer transbilayer distribution that occurs when SPM is included in POPC vesicles, the 3-OH group, 4,5-trans double bond, and amide linkage all were required in SPM. However, inclusion of 2 and 10 mol % dihydroSPM in SPM/POPC (1:1) vesicles mitigated and completely abrogated the effect of SPM on the transbilayer distribution of GalCer. Despite sharing some structural features with GalCer and localizing preferentially to the inner leaflet of POPC vesicles, dimyristoylphosphatidylethanolamine did not undergo a change in transbilayer distribution when SPM was incorporated into the vesicles. The results support the hypothesis that specific interactions may be favored among select sphingolipids in curvature-stressed membranes and emphasize the potential importance of the SPM-dihydroSPM ratio in membrane fission and fusion processes associated with vesicle biogenesis and trafficking.

Indexed as

1,2-DipalmitoylphosphatidylcholineAnimalsBiophysicsChickensGalactosylceramidesLipid BilayersLipidsMagnetic Resonance SpectroscopyMembrane MicrodomainsModels, MolecularNitrogenOvumOxygenPhosphatidylcholinesPhosphatidylethanolaminesPhospholipids1,2-dimyristoylphosphatidylethanolamine1,2-Dipalmitoylphosphatidylcholine1-palmitoyl-2-oleoylphosphatidylcholineGalactosylceramidesLipid BilayersLipidsNitrogenOxygenPhosphatidylcholinesPhosphatidylethanolaminesPhospholipidsSphingolipidsSphingomyelins

Identifiers

PMID15653730
PMCPMC1305363

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.