Evidence map›Paper›PMID 17709368›Full record

ReviewRNA (New York, N.Y.)2007

The birth of new exons: mechanisms and evolutionary consequences.

Rotem Sorek

Abstract readReview
In one paragraph

Review in RNA (New York, N.Y.), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 108 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
108citing papers in PubMed, 1 pooled it
–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

108 citing papers in PubMed, 1 synthesis or guideline pooled it.

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48 more citing papers are in PubMed but not listed here.

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.

Rotem SorekGenomics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. rsorek@lbl.gov

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A significant amount of literature was dedicated to hypotheses concerning the origin of ancient introns and exons, but accumulating evidence indicates that new exons are also constantly being added to evolving genomes. Several mechanisms contribute to the creation of novel exons in metazoan genomes, including whole gene and single exon duplications, but perhaps the most intriguing are events of exonization, where intronic sequences become exons de novo. Exonizations of intronic sequences, particularly those originating from repetitive elements, are now widely documented in many genomes including human, mouse, dog, and fish. Such de novo appearance of exons is very frequently associated with alternative splicing, with the new exon-containing variant typically being the rare one. This allows the new variant to be evolutionarily tested without compromising the original one, and provides an evolutionary strategy for generation of novel functions with minimum damage to the existing functional repertoire. This review discusses the molecular mechanisms leading to exonization, its extent in vertebrate genomes, and its evolutionary implications.

Indexed as

Evolution, MolecularAnimalsExonsVertebrates

Identifiers

PMID17709368
PMCPMC1986822

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.