Description
Product Characteristics: FUNCTION: Adapter protein which binds ubiquitin and may regulate the activation of NFKB1 by TNF-alpha, nerve growth factor (NGF) and interleukin-1. May play a role in titin/TTN downstream signaling in muscle cells. May regulate signaling cascades through ubiquitination. May be involved in cell differentiation, apoptosis, immune response and regulation of K(+) channels. SUBCELLULAR LOCATION: Cytoplasm. Late endosome. Nucleus. Note=Sarcomere. In cardiac muscles localizes to the sarcomeric band. Localizes to late endosomes. May also localize to the nucleus. Accumulates in neurofibrillary tangles and in Lewy bodies of neurons from individuals with Alzheimer and Parkinson disease respectively. Enriched in Rosenthal fibers of pilocytic astrocytoma. In liver cells, accumulates in Mallory bodies associated with alcoholic hepatitis, Wilson disease, indian childhood cirrhosis and in hyaline bodies associated with hepatocellular carcinoma. TISSUE SPECIFICITY: Ubiquitously expressed.,Ubiquitination,Sequestosome 1, phosphotyrosine-independent ligand for the Lck SH2 domain of 62 kDa, ubiquitin-binding protein p62, EBI3-associated protein of 60 kDa, p60, EBIAP, SQSTM1, A170, OSIL, PDB3, ZIP3, p62B
Target Information: This gene encodes a multifunctional protein that binds ubiquitin and regulates activation of the nuclear factor kappa-B (NF-kB) signaling pathway. The protein functions as a scaffolding/adaptor protein in concert with TNF receptor-associated factor 6 to mediate activation of NF-kB in response to upstream signals. Alternatively spliced transcript variants encoding either the same or different isoforms have been identified for this gene. Mutations in this gene result in sporadic and familial Paget disease of bone. [provided by RefSeq, Mar 2009]