Dear Flybase: I have a revised annotation of the homothorax locus (CG17117), based on comparison of the Celera/BDGP genomic seq and the following cDNA sequences: AF032865 (Kurant et al.; Salzberg in the attached figure) AF026788 (Rieckhof et al.; Mann in the figure) AF036584 (Pai et al.; \#5 in the figure) AF035825 (Pai et al., \#7 in the figure) \#4 cDNA (Sun, unpublished) The transcript should be 117,801 bp, encoding two protein isoform of 487 or 472 aa. The genes has 14 exons. One alternatively spliced exon is exon 8 and exon 8'. Exon 8' is only 3 bp. Both protein isoforms are represented by multiple cDNA clones. Several relevant files are attached. The two figures are in Canvas 6 and the two text files are in Word98. Henry Sun Institute of Molecular Biology Academia Sinica Nankang, Taipei 11529 Taiwan, Republic of china <up>FlyBase curator comment: attached figures and word files are archived.</up>