Aliases for TCEB1 Gene
External Ids for TCEB1 Gene
Previous GeneCards Identifiers for TCEB1 Gene
This gene encodes the protein elongin C, which is a subunit of the transcription factor B (SIII) complex. The SIII complex is composed of elongins A/A2, B and C. It activates elongation by RNA polymerase II by suppressing transient pausing of the polymerase at many sites within transcription units. Elongin A functions as the transcriptionally active component of the SIII complex, whereas elongins B and C are regulatory subunits. Elongin A2 is specifically expressed in the testis, and capable of forming a stable complex with elongins B and C. The von Hippel-Lindau tumor suppressor protein binds to elongins B and C, and thereby inhibits transcription elongation. Multiple alternatively spliced transcript variants encoding two distinct isoforms have been identified. [provided by RefSeq, Mar 2011]
GeneCards Summary for TCEB1 Gene
TCEB1 (Transcription Elongation Factor B Subunit 1) is a Protein Coding gene. Diseases associated with TCEB1 include Renal Cell Carcinoma and Hiv-1. Among its related pathways are Formation of the HIV-1 Early Elongation Complex and Antigen processing- Ubiquitination and Proteasome degradation. GO annotations related to this gene include protein complex binding.
UniProtKB/Swiss-Prot for TCEB1 Gene
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 A is transcriptionally active and its transcription activity is strongly enhanced by binding to the dimeric complex of the SIII regulatory subunits B and C (elongin BC complex).
The elongin BC complex seems to be involved as an adapter protein in the proteasomal degradation of target proteins via different E3 ubiquitin ligase complexes, including the von Hippel-Lindau ubiquitination complex CBC(VHL). By binding to BC-box motifs it seems to link target recruitment subunits, like VHL and members of the SOCS box family, to Cullin/RBX1 modules that activate E2 ubiquitination enzymes.