Evidence map›Paper›PMID 16495237›Full record

ArticleRNA (New York, N.Y.)2006

Ligation of the hairpin ribozyme in cis induced by freezing and dehydration.

Sergei A Kazakov, Svetlana V Balatskaya, Brian H Johnston

Open access · bronzeAbstract read
In one paragraph

Article in RNA (New York, N.Y.), 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
0.8field-weighted citation impact, top 29% of its field
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

21 citing papers in PubMed, 42 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Circular RNA: BiosynthesisFrontiers in bioengineering and biotechnology · 2021
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. An efficient method for long-term room temperature storage of RNA.European journal of human genetics : EJHG · 2014
    Article
  17. Article
  18. Article
  19. Article
  20. 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

3 authors at 1 institution in 1 country.

Sergei A KazakovSomagenics, Inc., 2161 Delaware Avenue, Santa Cruz, CA 95060, USA. skazakov@somagenics.com
Svetlana V Balatskaya
Brian H Johnston
SomaGenics (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although reducing the temperature slows most chemical reactions, freezing can stimulate some reactions by mechanisms that are only partially understood. Here we show that freezing stimulates the self-ligation (circularization) of linear forms of the hairpin ribozyme (HPR) containing 2',3'-cyclic phosphate and 5'-OH termini. Divalent metal ions (M2+) are not required, but monovalent cations and anions at millimolar concentrations can have various effects on this reaction depending on the specific ion. Under optimal conditions, the observed rate of M2+-independent self-ligation reaches a peak (0.04 min(-1)) at -10 degrees C with a yield of -60% after 1 h. In contrast, no ligation occurs either at above 0 degrees C or in solutions that remain unfrozen when supercooled to subzero temperatures. Under freezing conditions, the cleavage-ligation equilibrium strongly favors ligation. Besides freezing, evaporation of the aqueous solvent as well as the presence of ethanol at levels of 40% or above can also induce M2+-independent HPR ligation at 25 degrees C. We argue that partial RNA dehydration, which is a common feature of freezing, evaporation, and the presence of ethanol, is a key factor supporting HPR ligation activity at both above- and below-freezing temperatures. In the context of the RNA world hypothesis, freezing-induced ligation is an attractive mechanism by which complex RNAs could have evolved under conditions in which RNA was relatively protected against degradation.

Indexed as

Base SequenceCations, DivalentDesiccationEthanolEvolution, MolecularFreezingHydrogen-Ion ConcentrationMolecular Sequence DataNucleic Acid ConformationOrigin of LifeRNA, CatalyticSodium ChlorideCations, DivalentEthanolhairpin ribozymeRNA, CatalyticSodium Chloride

Identifiers

PMID16495237
PMCPMC1383583
OpenAlexW2139894458

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.