Cited by 179Developmental Biology and Gene RegulationMarine Invertebrate Physiology and EcologyOcular Disorders and Treatments

Role of Pax Genes in Eye Evolution

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Kozmik, Zbynek, Daube, Michael, Frei, Erich, Norman, Barbara, Kos, Lidia, Dishaw, Larry J., Noll, Markus, Piatigorsky, Joram·2003·Developmental Cell

Abstract

PaxB from Tripedalia cystophora, a cubomedusan jellyfish possessing complex eyes (ocelli), was characterized. PaxB, the only Pax gene found in this cnidarian, is expressed in the larva, retina, lens, and statocyst. PaxB contains a Pax2/5/8-type paired domain and octapeptide, but a Pax6 prd-type homeodomain. Pax2/5/8-like properties of PaxB include a DNA binding specificity of the paired domain, activation and inhibitory domains, and the ability to rescue spa(pol), a Drosophila Pax2 eye mutant. Like Pax6, PaxB activates jellyfish crystallin and Drosophila rhodopsin rh6 promoters and induces small ectopic eyes in Drosophila. Pax6 has been considered a "master" control gene for eye development. Our data suggest that the ancestor of jellyfish PaxB, a PaxB-like protein, was the primordial Pax protein in eye evolution and that Pax6-like genes evolved in triploblasts after separation from Cnidaria, raising the possibility that cnidarian and sophisticated triploblastic eyes arose independently.

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Crossref · 10.1016/s1534-5807(03)00325-3

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  • PaxB has a conserved role in neuronal development.

    “The findings that jellyfish PaxB gene is involved in the eye development of the cubomedusa Tripedalia cystophora and that PaxB can rescue a Drosophila eye mutant [78] suggests a conserved role of PaxB in neuronal development.”

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Authors
Kozmik, Z., Daube, M., Frei, E., Norman, B., Kos, L., Dishaw, L. J., Noll, M., & Piatigorsky, J.
Affiliations
  • University of Zurich (CH)
  • National Institutes of Health (US)
  • Florida International University (US)
Corresponding author
Piatigorsky, Joram
Venue
Developmental Cell
Publisher
Elsevier BV
Published
2003-11
Volume
5
Issue
5
Pages
773-785
ISSN
1534-5807 (ISSN-L)
OpenAlex
W1987125665
Cited by
179
References
72
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 1 · 2020: 4 · 2019: 2 · 2018: 6 · 2017: 7 · 2016: 3 · 2015: 10 · 2014: 8 · 2013: 8 · 2012: 8
FWCI
5.18
Type
journal article
Language
en
Open access
Locations
  • Developmental Cell (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Ocular Disorders and Treatments
Keywords
Pax genes, eye evolution, Tripedalia cystophora, ocelli, Pax6, homeodomain, paired domain, cnidarian evolution, statocyst, crystallins, rhodopsin, Drosophila
MeSH terms
PAX6 Transcription Factor, Amino Acid Sequence, Animals, Binding Sites, Cnidaria, Crystallins, DNA-Binding Proteins, Drosophila melanogaster, Biological Evolution, Eye, Eye Proteins, Molecular Sequence Data, Ocular Physiological Phenomena, Phenotype, Promoter Regions, Genetic, Proteins, Recombinant Fusion Proteins, Repressor Proteins, Rhodopsin, Transcription Factors, Transcriptional Activation, Sequence Alignment, Genes, Reporter, Photoreceptor Cells, Invertebrate, Homeodomain Proteins, Drosophila Proteins, Animals, Genetically Modified, Paired Box Transcription Factors, PAX2 Transcription Factor

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