RNA polymerase II transcription termination is mediated specifically by protein binding to a CCAAT box sequence.

AUTOR(ES)

Connelly, S

RESUMO

A region in the adenovirus major late promoter (MLP) containing a CCAAT consensus sequence can direct transcription termination of RNA polymerase II, a mechanism that possibly prevents transcriptional interference from upstream genes. Using a chimeric plasmid template that contains the MLP directing expression of the simian virus 40 early region, we showed that an inserted oligonucleotide containing only 13 base pairs of MLP sequences, including the CCAAT box, is capable of inducing transcription termination in an orientation-dependent, position-independent manner. Point mutations within the CCAAT-specific protein-binding site abolished this effect, while a base substitution outside of this region did not affect termination. These data suggest that termination is mediated by a CCAAT box-binding protein. Several other transcription factor-binding sites do not, however, cause termination, suggesting that this may be a relatively specific property of a CCAAT-binding protein.

Documentos Relacionados

• A DNA-binding protein is required for termination of transcription by RNA polymerase I in Xenopus laevis.
• Premature termination of RNA polymerase II mediated transcription of a seed protein gene in Schizosaccharomyces pombe
• Elongation factor SII-dependent transcription by RNA polymerase II through a sequence-specific DNA-binding protein.
• NF-Y Is Essential for the Recruitment of RNA Polymerase II and Inducible Transcription of Several CCAAT Box-Containing Genes
• A pause site for RNA polymerase II is associated with termination of transcription.