Cell-specific regulation of gene expression A specific signal molecule (such as one with the message, become a muscle cell )leads to production of regulatory proteins. These proteins bind to regulatory sites in DNA, triggering transcription of cell-specific proteins Promoter TRANSCRIPTION 0o00000000000000 Enhancer Exon Intron Exon Intron Exon Enhancer Promoter-proximal element 2005-11-11 Chaoqun Wu, Fudan University2005-11-11 Chaoqun Wu, Fudan University Chaoqun Wu, Fudan University 9 Cell-specific regulation of gene expression TRANSCRIPTION Enhancer Promoter Promoter-proximal element Enhancer A specific signal molecule (such as one with the message, “become a muscle cell”) leads to production of regulatory proteins. These proteins bind to regulatory sites in DNA, triggering transcription of cell-specific proteins. Exon Intron Exon Intron Exon