Eukaryotic peptide chain release factor GTP-binding subunit ERF3B (Gspt2)

Involved in translation termination in response to the termination codons UAA, UAG and UGA. May play a role as a powerful stimulator of the release factor activity of ETF1.

Exhibits GTPase activity, which is ribosome- and ETF1-dependent. May play a role in cell cycle progression.