Preinitiation complex
= Preinitiation complex
An assembly of <RNA polymerase> and associated factors at a <gene promoter> before productive <RNA> synthesis. Its positioning and opening of template <DNA> help determine initiation.
= Preinitiation complex
An assembly of <RNA polymerase> and associated factors at a <gene promoter> before productive <RNA> synthesis. Its positioning and opening of template <DNA> help determine initiation.