ELOB

ELOB is the protein elongin B, which is a subunit of the transcription factor B (SIII) complex. The SIII complex is composed of elongins A/A2, B and C. ELOB activates elongation by RNA polymerase II by suppressing transient pausing of the polymerase at many sites within transcription units. Elongin A plays a role 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. Two alternatively spliced transcript variants encoding different isoforms have been described for ELOB.

Elongin B

Positive regulation of proteasomal ubiquitin-dependent protein catabolic process Source: FlyBase
Protein-containing complex assembly Source: ProtInc
Protein ubiquitination Source: UniProtKB-UniPathway
Transcription elongation from RNA polymerase II promoter Source: ProtInc

Nucleus