Expression of AmHNF6, a sea star orthologue of a transcription factor with multiple distinct roles in sea urchin development
Abstract
The sea urchin transcription factor SpHNF6 is an early activator of differentiation genes in skeletogenic lineages and regulatory genes in the oral ectoderm. We report here the cloning and the expression of an orthologue of this gene, AmHNF6, from the sea star Asterina miniata. The vertebrate and the echinoderm hnf6 and onecut genes belong to the novel ONECUT homeo domain class of transcription factors. In blastula stage sea star embryos, AmHNF6 is expressed everywhere except around the vegetal pole. As is observed in sea urchin, by the end of gastrulation, the expression of AmHNF6 is distinctly localized to the ciliary bands. This terminal phase of expression has remained unchanged since the divergence of these two taxa half a billion years ago.
Additional Information
© 2004 Elsevier B.V. Received 5 June 2004; received in revised form 3 September 2004; accepted 17 September 2004. Available online 11 November 2004. We would like to thank Miki Yun of this Laboratory for sequencing the clones and the two reviewers for their insightful comments. This work was supported by NIH grant HD-37105, NASA/Ames grant NAG-1587, and the Caltech Beckman Institute.Additional details
- Eprint ID
- 63642
- Resolver ID
- CaltechAUTHORS:20160113-122351425
- HD-37105
- NIH
- NAG-1587
- NASA
- Caltech Beckman Institute
- Created
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2016-01-13Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field