ArticleAstrobiology2024
Stability of 20 Biogenic Amino Acids in Concentrated Sulfuric Acid: Implications for the Habitability of Venus' Clouds.
Article in Astrobiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 4 citations in OpenAlex.
- Peptides adopt stable omega-loop structures in concentrated sulfuric acid.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Exploration of extraterrestrial biosignatures and planetary habitability: A prospect.Fundamental research · 2026Review
- Synthesis of Azatide Dipeptide Analogs and Their Stability and Reactivity in 98%Molecules (Basel, Switzerland) · 2026Article
- Stability and Reactivity of Cyclopentane Nucleoside Analogs in 98%Molecules (Basel, Switzerland) · 2026Article
- Stability and Reactivity of Alternative Nucleobases in Concentrated Sulfuric Acid.Molecules (Basel, Switzerland) · 2026Article
- Warm, water-depleted rocky exoplanets with surface ionic liquids: A proposed class for planetary habitability.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- The diversity of exoplanetary environments and the search for signs of life beyond Earth.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Review
- Life on Venus?Life (Basel, Switzerland) · 2025Article
- Astrobiological implications of the stability and reactivity of peptide nucleic acid (PNA) in concentrated sulfuric acid.Science advances · 2025Article
- Article
- On the possibility of carbon-free heteropolymers on Venus: a computational astrobiology study.QRB discovery · 2025Article
- Venus cloud catcher as a proof of concept aerosol collection instrument.Scientific reports · 2024Article
- General instability of dipeptides in concentrated sulfuric acid as relevant for the Venus cloud habitability.Scientific reports · 2024Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Scientists have long speculated about the potential habitability of Venus, not at the 700K surface, but in the cloud layers located at 48-60 km altitudes, where temperatures match those found on Earth's surface. However, the prevailing belief has been that Venus' clouds cannot support life due to the cloud chemical composition of concentrated sulfuric acid-a highly aggressive solvent. In this work, we study 20 biogenic amino acids at the range of Venus' cloud sulfuric acid concentrations (81% and 98% w/w, the rest water) and temperatures. We find 19 of the biogenic amino acids we tested are either unreactive (13 in 98% w/w and 12 in 81% w/w) or chemically modified in the side chain only, after 4 weeks. Our major finding, therefore, is that the amino acid backbone remains intact in concentrated sulfuric acid. These findings significantly broaden the range of biologically relevant molecules that could be components of a biochemistry based on a concentrated sulfuric acid solvent.
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