Functional specificity of the Antennapedia homeodomain

Furukubo-Tokunaga, K. and Flister, S. and Gehring, W. J.. (1993) Functional specificity of the Antennapedia homeodomain. Proceedings of the National Academy of Sciences of the United States of America, Vol. 90, H. 13. pp. 6360-6364.

Full text not available from this repository.

Official URL: http://edoc.unibas.ch/dok/A5257320

Downloads: Statistics Overview


The segmental identity in animal development is determined by a set of homeotic selector genes clustered in the invertebrate HOM or vertebrate Hox homeo box complexes. These genes encode proteins with very similar homeodomains and highly diverged N- and C-terminal sequences. The Antennapedia (Antp) homeodomain, for instance, differs at only five amino acid positions from that of Sex combs reduced (Scr) protein. Using a heat shock assay in which chimeric Antp-Scr proteins are expressed ectopically in Drosophila, we have shown that the functional specificity of the Antp protein is determined by the four specific amino acids located in the flexible N-terminal arm of the homeodomain. The three-dimensional structure of the Antp homeodomain-DNA complex shows that this N-terminal arm is located in the minor groove of the DNA, suggesting that the functional specificity is determined either by slight differences in DNA binding and/or by selective interactions with other transcription factor(s).
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Cell Biology (Gehring)
UniBasel Contributors:Gehring, Walter Jakob
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:National Academy of Sciences
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:22 Mar 2012 14:19
Deposited On:22 Mar 2012 13:17

Repository Staff Only: item control page