TCEB3, also known as SIII, acts as a key transcription elongation factor that promotes RNA polymerase II progression beyond the blocking site. It interacts with SIII regulatory subunits B and C to form the elongin BC complex, which significantly enhances the transcriptional activity of subunit A. TCEB3 Protein, Human (sf9) is the recombinant human-derived TCEB3 protein, expressed by sf9 insect cells , with tag free.
