RNF144B (Ring Finger Protein 144B): RNF144B is a gene that encodes a protein from the RING finger family, which is involved in regulating protein degradation and cellular signaling. Its RING domain provides E3 ubiquitin ligase activity, enabling it to tag proteins for degradation through the ubiquitin-proteasome system. RNF144B plays a crucial role in maintaining protein homeostasis and proper cellular function.