J. Biol. Chem., Vol. 265, Issue 13, 7564-7569, 05, 1990
Transcription initiated by RNA polymerase II and purified transcription factors from liver. A complex set of promoter sequences governs formation of the initial complex
JW Conaway, E Travis and RC Conaway
Department of Chemistry, University of Texas, Austin 78712-1096.
Using a transcription system derived from rat liver, we have investigated
the function of the TATA-box and cap site/initiator regions in assembly of
stable intermediates on the pathway leading to formation of a functional
RNA polymerase II preinitiation complex. Our findings argue that neither
the TATA-box region nor the cap site/initiator region functions
independently in the binding of transcription factors during formation of
these intermediates, but, rather, the two sequence elements function
cooperatively to direct assembly of a stable preinitiation complex at the
promoter.