Charged multivesicular body protein 4

UniProtKB accession:  Q8T0Q4

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Probable core polymerisation component of the endosomal sorting required for transport (ESCRT) III complex involved in multiple cellular processes requiring the outward bending of membranes, including vesicle budding, membrane repair and cytokinesis (Probable). The ESCRT pathway involves 4 complexes (ESCRT-0, -I, -II and -III) that sequentially assemble on the cytoplasmic side of membranes and induce membrane remodeling, budding and scission. As part of the ESCRT-III complex, involved in the budding of intraluminal vesicles (ILVs) into endosomes to form multivesicular bodies (MVBs), which target their contents for degradation via the endolysosomal pathway (PubMed:16713958). Involved in regulation of signal transduction pathways, including the Notch and BMP/decapentaplegic (dpp) pathways, by sequestering the intracellular domains of activated receptors into ILVs, isolating them from the cytoplasm and targeting them for lysosomal degradation (PubMed:22162134, PubMed:25804739). Involved in targeting ubiquitilated proteins, such as mono-ubiquitilanated N/Notch, to MVBs for degradation (PubMed:33660341, PubMed:22162134). Plays a role in wing development by regulating Notch signaling (PubMed:22162134). Involved in abscission of germline cells during oogenesis (PubMed:25647097). Involved in spermiogenesis (PubMed:33660341). Required for efficient cytoplasmic isolation and abscission during cytokinesis of epithelial sensory organ precursor cells (PubMed:37226981). May be involved in septate junction remodeling and maintenance (PubMed:37226981).