UBE2G1 (Ubiquitin-conjugating Enzyme E2 G1): UBE2G1 is a member of the ubiquitin-conjugating enzyme family, playing a key role in the ubiquitin-proteasome system — a critical cellular pathway responsible for protein degradation and turnover. UBE2G1 specifically functions in attaching ubiquitin molecules to target proteins, marking them for degradation by the proteasome. This process is essential for regulating important cellular activities such as cell cycle progression, DNA repair, and signal transduction. The activity of UBE2G1 is tightly controlled and works in coordination with other components of the ubiquitin-proteasome system to maintain protein balance and proper cellular function.