Evidence map›Paper›PMID 21368183›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Abundant ammonia in primitive asteroids and the case for a possible exobiology.

Sandra Pizzarello, Lynda B Williams, Jennifer Lehman, Gregory P Holland, Jeffery L Yarger

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Review
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
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  8. Article
  9. Article
  10. Clays and the Origin of Life: The Experiments.Life (Basel, Switzerland) · 2022
    Review
  11. Article
  12. Article
  13. Article
  14. Carbonaceous Chondrite Meteorites: the Chronicle of a Potential Evolutionary Path between Stars and Life.Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life · 2017
    Article
  15. Review
  16. Pathways to Meteoritic Glycine and Methylamine.ACS earth & space chemistry · 2017
    Article
  17. Review
  18. Article
  19. Article
  20. Processing of meteoritic organic materials as a possible analog of early molecular evolution in planetary environments.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
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

5 authors.

Sandra PizzarelloDepartment of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA. pizzar@asu.edu
Lynda B Williams
Jennifer Lehman
Gregory P Holland
Jeffery L Yarger

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Carbonaceous chondrites are asteroidal meteorites that contain abundant organic materials. Given that meteorites and comets have reached the Earth since it formed, it has been proposed that the exogenous influx from these bodies provided the organic inventories necessary for the emergence of life. The carbonaceous meteorites of the Renazzo-type family (CR) have recently revealed a composition that is particularly enriched in small soluble organic molecules, such as the amino acids glycine and alanine, which could support this possibility. We have now analyzed the insoluble and the largest organic component of the CR2 Grave Nunataks (GRA) 95229 meteorite and found it to be of more primitive composition than in other meteorites and to release abundant free ammonia upon hydrothermal treatment. The findings appear to trace CR2 meteorites' origin to cosmochemical regimes where ammonia was pervasive, and we speculate that their delivery to the early Earth could have fostered prebiotic molecular evolution.

Indexed as

ExobiologyMinor PlanetsAmmoniaChromatography, GasMagnetic Resonance SpectroscopyMeteoroidsSolubilitySolventsTemperatureWaterAmmoniaSolventsWater

Identifiers

PMID21368183
PMCPMC3060264

What OpenQuestion holds

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Registered trials

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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.