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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Cloning and transcriptional analysis of the segmentation gene fushi tarazu of Drosophila.

In the course of studying the Antennapedia (Antp) locus, we found that one of the 3' Antp exons has weak cross-homology to another gene affecting segmentation, fushi tarazu (ftz; meaning "not enough segments"), which is 30 kb to the left of Antp. Homozygous ftz- embryos die before hatching and lack alternate body segments. The reduced number of segments results from the fusion of the anterior portion of one segment with the posterior portion of the next segment. The ftz gene encodes a single 1.9 kb poly(A)+ RNA expressed exclusively from the early blastoderm to gastrula stages of embryonic development. The structure of the ftz gene has been analyzed by S1 nuclease mapping and by restriction mapping of a cDNA clone. The ftz gene consists of two exons, and it is the 3' exon that cross-hybridizes with the 3' exon of Antp. The role of ftz in cell determination is discussed.[1]


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