RNA polymerase II transcription factor SIII subunit A3, Elongin-A3, EloA3, Transcription elongation factor B polypeptide 3C, TCEB3C, TCEB3L2
SIII, also known as elongin, is a general transcription elongation factor that increases the RNA polymerase II transcription elongation past template-encoded arresting sites. Subunit A3 is transcriptionally active but its transcription activity is not enhanced by binding to the dimeric complex of the SIII regulatory subunits B and C (elongin BC complex).
