The cloned promoter regions of BmKDfsin3, BmKDfsin4 and BmKDfsin6 were sequenced and analysed to identify potential transcriptional regulating elements. The potential transcriptional regulating elements are highlighted with red letters and grey background. The sequences of the ORFs are presented in red capital letters. (a) BmKDfsin3. (b) BmKDfsin4. (c) BmKDfsin6.