Identify the statements that are features of a promoter. In both prokaryotes and eukaryotes, the promoter is located in the 5' direction, upstream from the transcription start site. Typically, the promoter contains a TATA box, which is where the TATA-binding protein binds in eukaryotes. The promoter attracts the small and large ribosomal subunits with the help of initiation factors in eukaryotes. In eukaryotes, the promoter is recognized by the sigma factor subunit, which must bind to the promoter before forming the preinitiation complex. In prokaryotes, the promoter contains a 35 and 10 region upstream of the transcription start site.