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The Xenopus Eomesodermin promoter and its concentration-dependent response to activin
journal contribution
posted on 2023-05-18, 09:14 authored by Ryan, K, Garrett, N, Bourillot, P-Y, Fiona StennardFiona Stennard, Gurdon, JBEomesodermin is an essential early gene in Xenopus mesoderm formation and shows a morphogen-like response to activin. Here we defne the regions of the Eomesodermin promoter required for mesodermal expression and for concentration-dependent response to activin. We find an activin response element (ARE) located between 25.6 and 25.0 kb which contains two critical FAST2 binding sites. The ARE alone is necessary and sufficient for concentration-dependent response to activin. A 5.6 kb promoter recapitulates Eomes expression in normal mesoderm cells. A repressor element extinguishes Eomes expression in the endoderm. We relate our results to mesoderm patterning in early Xenopus development and to a mechanism of morphogen gradient response.
History
Publication title
Mechanisms of DevelopmentVolume
94Pagination
133-146ISSN
0925-4773Department/School
Menzies Institute for Medical ResearchPublisher
Elsevier Science BvPlace of publication
Po Box 211, Amsterdam, Netherlands, 1000 AeRights statement
Copyright 2000 ELsevier Science Ireland Ltd.Repository Status
- Restricted