The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.
Molecular evolution of biomembranes: structural equivalents and phylogenetic precursors of sterols.
Open accessAbstract
Derivatives of one triterpene family, the hopane family, are widely distributed in prokaryotes; they may be localized in membranes, playing there the same role as sterols play in eukaryotes, as a result of their similar size, rigidity, and amphiphilic character. Their biosynthesis embodies many primitive features compared to that of sterols and could have evolved toward the latter once aerobic conditions had been established. Membrane reinforcement appears to be achieved in other prokaryotes by other mechanisms, involving either approximately 40-A-long rigid hydrocarbon chains terminated by one polar group acting like a peg through the double-layer or similar chains terminated by two polar groups acting like tie-bars across the membrane. These inserts can be tetraterpenes (e.g., carotenoids). The biophysical function of membrane optimizers appears to have evolved toward sterols by changes limited to only a few enzymatic steps of the same fundamental biosynthetic processes.
Overview
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.
Integrity signals
Registry
Cites
Statistics
Verification
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.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Phylogenetic structure of the prokaryotic domain: The primary kingdoms
Woese, C. R., & Fox, G. E. (1977) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.74.11.5088 · Cited by 4,131
The function of sterols in membranes
Demel, R. A., & De Kruyff, B. (1976) · Biochimica et Biophysica Acta (BBA) - Reviews on Biomembranes · doi:10.1016/0304-4157(76)90008-3 · Cited by 1,341
Thompson, G. A., Bambery, R. J., & Nozawa, Y. (1971) · Biochemistry · doi:10.1021/bi00800a014 · Cited by 674
Fatty acids of the genus Bacillus: an example of branched-chain preference
Kaneda, T. (1977) · Bacteriological Reviews · doi:10.1128/br.41.2.391-418.1977 · Cited by 442
Steroids and Squalene in Methylococcus capsulatus grown on Methane
BIRD, C. W., LYNCH, J. M., PIRT, F. J., REID, W. W., BROOKS, C. J. W., & MIDDLEDITCH, B. S. (1971) · Nature · doi:10.1038/230473a0 · Cited by 289
Nes, W. R. (1974) · Lipids · doi:10.1007/bf02532509 · Cited by 263
Δ8(14)-steroids in the bacterium Methylococcus capsulatus
Bouvier‐Navé, P., Rohmer, M., Benveniste, P., & Ourisson, G. (1976) · Biochemical Journal · doi:10.1042/bj1590267 · Cited by 176
Self-citationCharacterization and Composition of the Purple and Red Membrane from Halobacterium cutirubrum
Kushwaha, S. C., Kates, M., & Martin, W. G. (1975) · Canadian Journal of Biochemistry · doi:10.1139/o75-040 · Cited by 127
Differential effects of cholesterol and lanosterol on artificial membranes.
Yèagle, P. L., Martin, R. B., Lala, A. K., et al. (1977) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.74.11.4924 · Cited by 122
Effect of sterol replacement in vivo on the fatty acid composition of Tetrahymena.
Ferguson, K. A., Davis, F. M., Conner, R. L., et al. (1975) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(19)41031-4 · Cited by 63
Cited by
Mechanisms of membrane toxicity of hydrocarbons
Sikkema, J., de Bont, J. A., & Poolman, B. (1995) · Microbiological Reviews · doi:10.1128/mr.59.2.201-222.1995 · Cited by 2,685
“carotenoids, which serve as modifiers of membrane fluidity and integrity (3, 30, 169, 244).”
BackgroundPeters, K. E., Walters, C. C., & Moldowan, J. M. (2004) · Cambridge University Press eBooks · doi:10.1017/cbo9780511524868 · Cited by 2,089
Physical properties of the fluid lipid-bilayer component of cell membranes: a perspective
Bloom, M., Evans, E., & Mouritsen, O. G. (1991) · Quarterly Reviews of Biophysics · doi:10.1017/s0033583500003735 · Cited by 872
Groundworks for an evolutionary biochemistry: The iron-sulphur world
Wächtershäuser, G. (1992) · Progress in Biophysics and Molecular Biology · doi:10.1016/0079-6107(92)90022-x · Cited by 677
Sterol, Structure and Membrane Function
Bloch, K. E. (1983) · Critical Reviews in Biochemistry · doi:10.3109/10409238309102790 · Cited by 677
Metadata
- Authors
- Rohmer, M., Bouvier, P., & Ourisson, G.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1979-02
- Volume
- 76
- Issue
- 2
- Pages
- 847-851
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2065235605
- Cited by
- 313
- References
- 12
- FWCI
- 3.06
- Type
- journal article
- Language
- en
- Open access
- green
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
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Molecular evolution of biomembranes: structural equivalents and phylogenetic precursors of sterols. https://app.cochat.ai/papers/10.1073/pnas.76.2.847
- The paper
- Rohmer, M., Bouvier, P., & Ourisson, G. (1979). Molecular evolution of biomembranes: structural equivalents and phylogenetic precursors of sterols. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.76.2.847
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.