Cited by 228Genomics and Chromatin DynamicsDevelopmental Biology and Gene RegulationGene Regulatory Network Analysis

Multiple enhancers ensure precision of gap gene-expression patterns in the Drosophila embryo

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Perry, Michael W., Boettiger, Alistair N., Levine, Michael·2011·Proceedings of the National Academy of Sciences

Abstract

Segmentation of the Drosophila embryo begins with the establishment of spatially restricted gap gene-expression patterns in response to broad gradients of maternal transcription factors, such as Bicoid. Numerous studies have documented the fidelity of these expression patterns, even when embryos are subjected to genetic or environmental stress, but the underlying mechanisms for this transcriptional precision are uncertain. Here we present evidence that every gap gene contains multiple enhancers with overlapping activities to produce authentic patterns of gene expression. For example, a recently identified hunchback ( hb ) enhancer (located 5-kb upstream of the classic enhancer) ensures repression at the anterior pole. The combination of intronic and 5′ knirps ( kni ) enhancers produces a faithful expression pattern, even though the intronic enhancer alone directs an abnormally broad expression pattern. We present different models for “enhancer synergy,” whereby two enhancers with overlapping activities produce authentic patterns of gene expression.

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Crossref · 10.1073/pnas.1109873108

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  • In Drosophila, eve expression is controlled by five separate enhancers to produce stripe patterning in the embryo.

    “In Drosophila, eve expression is controlled by five separate enhancers to produce stripe patterning in the embryo [483].”

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Authors
Perry, M. W., Boettiger, A. N., & Levine, M.
Affiliations
  • Department of Integrative Biology,
  • Biophysics Graduate Group,
  • University of California, Berkeley (US)
Venue
Proceedings of the National Academy of Sciences
Published
2011-08-08
Volume
108
Issue
33
Pages
13570-13575
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2077122170
Cited by
228
References
3
Citations by year
2026: 4 · 2025: 10 · 2024: 16 · 2023: 13 · 2022: 15 · 2021: 18 · 2020: 13 · 2019: 18 · 2018: 21 · 2017: 15 · 2016: 20 · 2015: 14 · 2014: 15 · 2013: 19 · 2012: 15
FWCI
6.63
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • UC Berkeley College of Chemistry
  • National Institute of General Medical Sciences (R01GM034431, GM34431)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
Keywords
gap genes, enhancer redundancy, Drosophila embryo, hunchback, knirps, embryonic segmentation, intronic enhancer
MeSH terms
Animals, Drosophila melanogaster, Embryo, Nonmammalian, Embryonic Induction, Enhancer Elements, Genetic, Transcription Factors, Gene Expression Regulation, Developmental, Body Patterning, GTPase-Activating Proteins

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