Dear Editor, The structure of eukaryotic promoter is modular, consisting of different sub-domains (Benfey et al., 1990). Cross-talk among these sub-domains and effective combinatorial interac- tions between the spe...Dear Editor, The structure of eukaryotic promoter is modular, consisting of different sub-domains (Benfey et al., 1990). Cross-talk among these sub-domains and effective combinatorial interac- tions between the specific cis-element/s with respective trans- factor/s usually control the strength and tissue specificity of the promoter. Further, specificity/inducibility of promoter can be modified by altering its genetic architecture through 'cis-rearrangement' (Rushton et al., 2002) and 'swapping of sub-domains' (Bhullar et al., 2003). The fundamental motiva- tion behind developing such modified promoters lies in thebelief that the swapping/shuffling of the upstream activation sequences carrying a specific set of cis-elements that bind to a particular trans-factor from one promoter to the other con- taininq a TATA seauence that miaht result in a novel chimericregu!atory module,展开更多
文摘Dear Editor, The structure of eukaryotic promoter is modular, consisting of different sub-domains (Benfey et al., 1990). Cross-talk among these sub-domains and effective combinatorial interac- tions between the specific cis-element/s with respective trans- factor/s usually control the strength and tissue specificity of the promoter. Further, specificity/inducibility of promoter can be modified by altering its genetic architecture through 'cis-rearrangement' (Rushton et al., 2002) and 'swapping of sub-domains' (Bhullar et al., 2003). The fundamental motiva- tion behind developing such modified promoters lies in thebelief that the swapping/shuffling of the upstream activation sequences carrying a specific set of cis-elements that bind to a particular trans-factor from one promoter to the other con- taininq a TATA seauence that miaht result in a novel chimericregu!atory module,