Evidence map›Paper›PMID 27044100›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

Accumulation of formamide in hydrothermal pores to form prebiotic nucleobases.

Doreen Niether, Dzmitry Afanasenkau, Jan K G Dhont, Simone Wiegand

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Direct Synthesis of Formamide from COJournal of the American Chemical Society · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Soret separation and thermo-osmosis in porous media.The European physical journal. E, Soft matter · 2022
    Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Prebiotic Syntheses Under Shock in the Water - Formamide - Potassium Bicarbonate - Sodium Hydroxide System.Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life · 2019
    Article
  16. Article
  17. A Universal Geochemical Scenario for Formamide Condensation and Prebiotic Chemistry.Chemistry (Weinheim an der Bergstrasse, Germany) · 2019
    Review
  18. Article
  19. Review
  20. Review
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

4 authors.

Doreen NietherInstitute of Complex Systems-3 Soft Condensed Matter, Forschungszentrum Juelich GmbH, D-52428 Juelich, Germany;
Dzmitry AfanasenkauInstitute of Complex Systems-3 Soft Condensed Matter, Forschungszentrum Juelich GmbH, D-52428 Juelich, Germany;
Jan K G DhontInstitute of Complex Systems-3 Soft Condensed Matter, Forschungszentrum Juelich GmbH, D-52428 Juelich, Germany; Department of Physics, Heinrich-Heine-Universitaet Duesseldorf, D-40225 Dusseldorf, Germany;
Simone WiegandInstitute of Complex Systems-3 Soft Condensed Matter, Forschungszentrum Juelich GmbH, D-52428 Juelich, Germany; Department für Chemie - Physikalische Chemie, Universitaet zu Koeln, 50939 Cologne, Germany s.wiegand@fz-juelich.de.ORCID http://orcid.org/0000-0001-6333-1956

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Formamide is one of the important compounds from which prebiotic molecules can be synthesized, provided that its concentration is sufficiently high. For nucleotides and short DNA strands, it has been shown that a high degree of accumulation in hydrothermal pores occurs, so that temperature gradients might play a role in the origin of life [Baaske P, et al. (2007)Proc Natl Acad Sci USA104(22):9346-9351]. We show that the same combination of thermophoresis and convection in hydrothermal pores leads to accumulation of formamide up to concentrations where nucleobases are formed. The thermophoretic properties of aqueous formamide solutions are studied by means of Infrared Thermal Diffusion Forced Rayleigh Scattering. These data are used in numerical finite element calculations in hydrothermal pores for various initial concentrations, ambient temperatures, and pore sizes. The high degree of formamide accumulation is due to an unusual temperature and concentration dependence of the thermophoretic behavior of formamide. The accumulation fold in part of the pores increases strongly with increasing aspect ratio of the pores, and saturates to highly concentrated aqueous formamide solutions of ∼85 wt% at large aspect ratios. Time-dependent studies show that these high concentrations are reached after 45-90 d, starting with an initial formamide weight fraction of[Formula: see text]wt % that is typical for concentrations in shallow lakes on early Earth.

Indexed as

Origin of LifeDNAFormamidesHydrothermal VentsNucleotidesDNAformamideFormamidesNucleotidesconcentration problemhydrothermal ventsmolecular evolutionorigin-of-life problemthermophoresis

Identifiers

PMID27044100
PMCPMC4843465

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.