TFIIB-type (IPR013137) represents the zinc finger motif present in transcription factor IIB (TFIIB). The polymerase II complex (Pol II) starts the transcription of protein-coding genes with the help of general and specific transcription factors. General transcription factors operate through common promoter elements, including the TATA box. TFIIB and TFIID are responsible for the promoter's recognition and interaction with Pol II. In conjunction with Pol II, they form a minimal initiation complex that is capable of transcription under specific conditions. In the initiation complex, the TBP subunit of TFIID binds to the TATA box of the Pol II promoter. This makes the DNA bend around the C-terminal domain of TFIIB. Meanwhile, the TFIIB's N-terminal zinc finger interacts with Pol II.