Evidence map›Paper›PMID 22442009›Full record

ArticleGenome research2012

Coding exons function as tissue-specific enhancers of nearby genes.

Ramon Y Birnbaum, E Josephine Clowney, Orly Agamy, Mee J Kim, Jingjing Zhao, Takayuki Yamanaka, Zachary Pappalardo, Shoa L Clarke, Aaron M Wenger, Loan Nguyen and 7 more

Abstract read
In one paragraph

Article in Genome research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers.

0numbers the graph read from it
0cells of the map it votes in
142citing 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

142 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Signal control during tissue regeneration in adult animals.Nature reviews. Molecular cell biology · 2026
    Review
  7. Review
  8. Introducing the EpGEpigenomes · 2025
    Article
  9. Article
  10. Prediction of Enhancer RNAs in Chicken Genome.International journal of molecular sciences · 2025
    Article
  11. Review
  12. Article
  13. The Function and Regulation of celsr1a in Skeletal Age-associated Homeostasis and Repair in Zebrafish.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

82 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

17 authors.

Ramon Y BirnbaumDepartment of Bioengineering and Therapeutic Sciences, University of California-San Francisco, CA 94143, USA.
E Josephine Clowney
Orly Agamy
Mee J Kim
Jingjing Zhao
Takayuki Yamanaka
Zachary Pappalardo
Shoa L Clarke
Aaron M Wenger
Loan Nguyen
Fiorella Gurrieri
David B Everman
Charles E Schwartz
Ohad S Birk
Gill Bejerano
Stavros Lomvardas
Nadav Ahituv

Funding

PHARMACOGENETICS OF MEMBRANE TRANSPORTERSU01GM061390 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GIACOMINI, KATHLEEN M · 2000 to 2009
$29.2M
Pharmacogenomics of Membrane TransportersU19GM061390 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KWOK, PUI-YAN · 2010 to 2014
$16.3M
PHARMACEUTICAL SCIENCES AND PHARMACOGENOMICST32GM007175 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI AHITUV, NADAV, KROETZ, DEANNA L · 1985 to 2021
$7.1M
Characterization of regulatory elements leading to human limb malformationsR01HD059862 · NICHD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI AHITUV, NADAV, BEJERANO, GILL · 2009 to 2013
$2.2M
Computational & Functional Annotation of the Zebrafish Genome Regulatory ToolboxR01HG005058 · NHGRI · STANFORD UNIVERSITY · PI AHITUV, NADAV, BEJERANO, GILL · 2009 to 2012
$1.6M
NHGRI NIH HHS R01 HG005058NHGRI NIH HHS R01HG005058NICHD NIH HHS R01 HD059862NICHD NIH HHS R01HD059862NIGMS NIH HHS GM61390NIGMS NIH HHS T32 GM007175NIGMS NIH HHS U01 GM061390NIGMS NIH HHS U19 GM061390
6 · The paper itself

Abstract

Enhancers are essential gene regulatory elements whose alteration can lead to morphological differences between species, developmental abnormalities, and human disease. Current strategies to identify enhancers focus primarily on noncoding sequences and tend to exclude protein coding sequences. Here, we analyzed 25 available ChIP-seq data sets that identify enhancers in an unbiased manner (H3K4me1, H3K27ac, and EP300) for peaks that overlap exons. We find that, on average, 7% of all ChIP-seq peaks overlap coding exons (after excluding for peaks that overlap with first exons). By using mouse and zebrafish enhancer assays, we demonstrate that several of these exonic enhancer (eExons) candidates can function as enhancers of their neighboring genes and that the exonic sequence is necessary for enhancer activity. Using ChIP, 3C, and DNA FISH, we further show that one of these exonic limb enhancers, Dync1i1 exon 15, has active enhancer marks and physically interacts with Dlx5/6 promoter regions 900 kb away. In addition, its removal by chromosomal abnormalities in humans could cause split hand and foot malformation 1 (SHFM1), a disorder associated with DLX5/6. These results demonstrate that DNA sequences can have a dual function, operating as coding exons in one tissue and enhancers of nearby gene(s) in another tissue, suggesting that phenotypes resulting from coding mutations could be caused not only by protein alteration but also by disrupting the regulation of another gene.

Indexed as

Enhancer Elements, GeneticExonsGene Expression RegulationAnimalsChromatin ImmunoprecipitationChromosome AberrationsCytoplasmic DyneinsExtremitiesFemaleHomeodomain ProteinsHumansIn Situ Hybridization, FluorescenceLimb Deformities, CongenitalMaleMiceMice, TransgenicCytoplasmic DyneinsDlx5 protein, mouseDlx6 protein, mouseDync1li1 protein, mouseHomeodomain Proteins

Identifiers

PMID22442009
PMCPMC3371700

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.