Successively expressed cuticular protein genes at the prepupal stage in wing discs of Bombyx mori

Background We classified cuticular protein genes expressed at prepupal stage in wing discs of Bombyx mori into six groups according to their developmental expression and ecdysone responsiveness. Their expression pattern is suggested to be regulated by ecdysone-responsive transcription factors, whose transcripts showed resemblance with those of cuticular protein gene expression.