UBLCP1 (Ubiquitin Like Domain Containing CTD Phosphatase 1): UBLCP1 is a protein that indicates the activity of a phosphatase involved in regulating RNA polymerase II, a key enzyme in transcription. UBLCP1 plays a vital role in dephosphorylating the C-terminal domain of RNA polymerase II, affecting gene expression and influencing various cellular processes and disease pathways.