Evidence map›Paper›PMID 9611226›Full record

ArticleNucleic acids research1998

Non-homologous recombination mediated by Thermus aquaticus DNA polymerase I. Evidence supporting a copy choice mechanism.

P G Zaphiropoulos

Open access · bronzeAbstract read
In one paragraph

Article in Nucleic acids research, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

11 citing papers in PubMed, 30 citations in OpenAlex.

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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

1 author at 1 institution in 1 country.

P G ZaphiropoulosDepartment of Bioscience, Center for Nutrition and Toxicology, Karolinska Institute, Novum, 141 57 Huddinge, Sweden. peza@cnt.ki.se
Karolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

RT-PCR amplification of P450 2C6 from rat liver, using primers in opposite orientations of exon 6, resulted in PCR products containing segments of exons joined at non-consensus splice sites. Moreover, many of the PCR products identified were composed of not only a single region containing exonic segments joined at non-consensus splice sites but, instead, of several repeats of the non-canonically joined region. To investigate whether these PCR products represent pre-existing molecules or are generated during the amplification process, the liver cDNA template was replaced by a plasmid containing the P450 2C6 cDNA. Surprisingly, PCR products containing repeats of non-canonically joined exonic segments were again revealed. In some cases the position of this non-canonical joining was a sequence of one or two identical nucleotides; however, there were also a number of products lacking any nucleotide identity at the position of joining. DNA nicking and/or DNA damage is thought to favour recombination during PCR, probably by misalignment of incomplete DNA strands; however, the presence of multiple repeats of the recombined region in the PCR products identified suggests a certain repetitiveness of the underlying mechanism. It is therefore proposed that these products result from a template switching event that occurs several times during a single polymerization step, following a rolling circle model of DNA synthesis.

Indexed as

Polymerase Chain ReactionAnimalsBase SequenceCytochrome P-450 Enzyme SystemCytochrome P450 Family 2DNA, ComplementaryExonsLiverModels, GeneticMolecular Sequence DataRatsRecombination, GeneticRepetitive Sequences, Nucleic AcidRNA SplicingSteroid 21-HydroxylaseTaq PolymeraseCyp2c6v1 protein, ratCytochrome P-450 Enzyme SystemCytochrome P450 Family 2DNA, ComplementarySteroid 21-HydroxylaseTaq Polymerase

Identifiers

PMID9611226
PMCPMC147658
OpenAlexW2073628176

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.