Cited by 309Lipid Membrane Structure and BehaviorProtein Structure and DynamicsProtein Interaction Studies and Fluorescence Analysis

Phospholipid-Cytochrome c Interaction

Open access
Tuominen, Esa K.J., Wallace, Carmichael J.A., Kinnunen, Paavo K.J.·2002·Journal of Biological Chemistry

Abstract

Binding of cytochrome c (cyt c) to fatty acids and acidic phospholipid membranes produces pronounced and essentially identical changes in the spectral properties of cyt c, revealing conformational changes in the protein. The exact mechanism of the interaction of fatty acids and acidic phospholipids with cyt c is unknown. Binding of cyt c to liposomes with high contents (mole fraction X > 0.7) of acidic phospholipids caused spectral changes identical to those due to binding of oleic acid. Fluorescence spectroscopy of a cyt c analog containing a Zn(2+) substituted heme moiety and brominated lipid derivatives (9,10)-dibromostearate and 1-palmitoyl-2-(9,10)-dibromo-sn-glycero-3-phospho-rac-glycerol demonstrated a direct contact between the fluorescent [Zn(2+)-heme] group and the brominated acyl chain. These data constitute direct evidence for interaction between an acyl chain of a membrane phospholipid and the inside of the protein containing the heme moiety and provide direct evidence for the so-called extended-lipid anchorage of cyt c to phospholipid membranes. In this mechanism, one of the phospholipid acyl chains protrudes out of the membrane and intercalates into a hydrophobic channel in cyt c while the other chain remains in the bilayer.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1074/jbc.m200056200

Cites

89 of 89 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The heme iron of cytochrome c is predominately hexacoordinate, but can become pentacoordinate when the iron-methionine bond is ruptured which occurs when the methionine is oxidized, tyrosines are nitrated, or the cytochrome interacts with anionic phospholipids.

    “Similar to Ngb, the heme iron of cytochrome c is predominately hexacoordinate, but can become pentacoordinate when the iron-methionine bond is ruptured which occurs when the methionine is oxidized [65, 66], tyrosines are nitrated [67, 68], or the cytochrome interacts with anionic phospholipids such as those present in the inner membrane of the mitochondria [69–71].”

    From Mechanisms of nitrite bioactivation (2014) · cites this paper as [71]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. Vik, S. B., Georgevich, G., and Capaldi, R. A. (1981) Proc. Natl. Acad. Sci.
  2. Hamada, D., Kidokoro A.-I., Fukada, H., Takahashi, K., and Goto, Y. (1994) Proc. Natl. Acad. Sci. U. S. A. 91, 10325-10329
  3. Svensson, M., Håkansson, A., Mossberg, A.-K., and Svanborg, C. (2000) Proc. Natl. Acad. Sci. U. S. A. 97, 4221-4226

Cited by

Sorted by citations

Authors
Tuominen, E. K. J., Wallace, C. J. A., & Kinnunen, P. K. J.
Affiliations
  • University of Helsinki (FI)
  • Dalhousie University (CA)
Corresponding author
Kinnunen, Paavo K.J.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2002-03
Volume
277
Issue
11
Pages
8822-8826
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2002088627
Cited by
309
References
89
Citations by year
2026: 1 · 2025: 5 · 2024: 5 · 2023: 6 · 2022: 5 · 2021: 10 · 2020: 9 · 2019: 6 · 2018: 10 · 2017: 13 · 2016: 15 · 2015: 15 · 2014: 17 · 2013: 17 · 2012: 19
FWCI
4.98
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Helsingin Yliopisto
  • Tekes
  • Natural Sciences and Engineering Research Council of Canada
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Lipid Membrane Structure and Behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Interaction Studies and Fluorescence Analysis
Keywords
cytochrome c, phospholipid binding, anionic phospholipids, fatty acids, protein conformational change, liposomes, oleic acid, membrane protein-lipid interactions, spectral changes
MeSH terms
Cytochrome c Group, Membrane Lipids, Phospholipids, Spectrometry, Fluorescence, Apoptosis

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review