Arrange the following steps of the regulation of the trp operonin order of occurrence.

_The trp repressor protein binds to the operator
_levels of tryptophan rise and more is required
-Tryptophan binds to trp repressor protein and induces aconformational change
_Products of the trp gene synthesize tryptophan
_RNA polymerase binds to the promotor allowing transcription of thetrp genes to proceed.
_The trp repressor protein blocks RNA polymerase from binding tothe promotor.