Cited by 272Origins and Evolution of LifeAstro and Planetary ScienceSpace Science and Extraterrestrial Life

Amphiphilic components of the murchison carbonaceous chondrite: Surface properties and membrane formation

Deamer, D. W., Pashley, R. M.·1989·Origins of life and evolution of the biosphere

Abstract

We have investigated physicochemical properties of amphiphilic compounds in carbonaceous meteorites. The primary aim was to determine whether such materials represent plausible sources of lipid-like compounds that could have been involved as membrane components in primitive cells. Samples of the Murchison CM2 chondrite were extracted with chloroform-methanol, and the chloroform-soluble material was separated by two-dimensional thin layer chromatography. Fluorescence, iodine stains and charring were used to identify major components on the plates. These were then scraped and eluted as specific fractions which were investigated by fluorescence and absorption spectra, surface chemical methods, gas chromatography-mass spectrometry, and electron microscopy. Fraction 5 was strongly fluorescent, and contained pyrene and fluoranthene, the major polycyclic aromatic hydrocarbons of the Murchison chondrite. This fraction was also present in extracts from the Murray and Mighei CM2 chondrites. Fraction 3 was surface active, forming apparent monomolecular films at air-water interfaces. Surface force measurements suggested that fraction 3 contained acidic groups. Fraction 1 was also surface active, and certain components could self-assemble into membranous vesicles which encapsulated polar solutes. The observations reported here demonstrate that organic compounds plausibly available on the primitive Earth through meteoritic infall are surface active, and have the ability to self-assemble into membranes.

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Crossref · 10.1007/bf01808285

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  • Amphiphilic compounds are present in carbonaceous meteorites and can assemble into membranous vesicles.

    “Amphiphilic compounds are present in carbonaceous meteorites and can assemble into membranous vesicles (Deamer, 1985; Deamer and Pashley, 1989; Naraoka et al., 1999; Deamer et al. 2002; Deamer and Dworkin, 2005).”

    From The Hot Spring Hypothesis for an Origin of Life (2020) · cites this paper as Deamer and Pashley, 1989

  • Amphiphilic molecules collected from the Murchison meteorite spontaneously form vesicles when placed in aqueous solution.

    “Amphiphilic molecules collected from the Murchison meteorite spontaneously form vesicles when placed in aqueous solution (Deamer and Pashley, 1989).”

    From The Astrobiology Primer v2.0 (2016) · cites this paper as Deamer and Pashley, 1989

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Authors
Deamer, D. W., & Pashley, R. M.
Affiliations
  • University of California, Davis (US)
  • Australian National University (AU)
Venue
Origins of life and evolution of the biosphere
Published
1989-01
Volume
19
Issue
1
Pages
21-38
ISSN
  • 0169-6149 (ISSN-L)
  • 1573-0875
OpenAlex
W2018664170
Cited by
272
References
27
Citations by year
2026: 9 · 2025: 9 · 2024: 10 · 2023: 18 · 2022: 13 · 2021: 14 · 2020: 9 · 2019: 7 · 2018: 9 · 2017: 3 · 2016: 5 · 2015: 11 · 2014: 6 · 2013: 10 · 2012: 7
FWCI
4.10
Type
journal article
Language
en
Open access
closed
Locations
  • Origins of Life and Evolution of Biospheres (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Aeronautics and Space Administration
  • John Simon Guggenheim Memorial Foundation
  • Australian National University
  • National Institutes of Health
  • National Center for Research Resources (RR01460-01)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Space Science and Extraterrestrial Life
Keywords
Murchison meteorite, CM2 chondrites, amphiphilic molecules, lipid-like compounds, membrane self-assembly, vesicle formation, polycyclic aromatic hydrocarbons, pyrene, fluoranthene, surfactants, monolayers, acidic surface groups, meteorite organic matter, origin of life
MeSH terms
Australia, Carbon, Chromatography, Thin Layer, Gas Chromatography-Mass Spectrometry, Membranes, Spectrum Analysis, Surface Properties

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