Anti-SQSTM1/p62 Antibody Picoband® (monoclonal, 3H11)

SQSTM1 (Sequestosome-1), also known as Ubiquitin-Binding Protein P62 or P62, is a protein that in humans is encoded by the SQSTM1 gene. The Src homology type 2 (SH2) domain is a highly conserved motif of about 100 amino acids which mediates protein-protein interactions by binding to phosphotyrosine.p56-lck, a T-cell-specific src family tyrosine kinase with an SH2 domain, is involved in T-cell signal transduction. The International Radiation Hybrid Mapping Consortium mapped the p62 gene to chromosome 5q35. Park et al. (1995) found that the p56-lck SH2 domain binds to p62 at the ser59 of p62 only when that serine is phosphorylated. Joung et al. (1996) expressed epitope-tagged p62 in Hela cells and showed that the expressed protein bound to the lck SH2 domain and that this binding was dependent on the N-terminal 50 amino acids of p62 but not on the tyrosine residue in this region.

Sequestosome-1; EBI3-associated protein of 60 kDa; EBIAP; p60; Phosphotyrosine-independent ligand for the Lck SH2 domain of 62 kDa; Ubiquitin-binding protein p62; SQSTM1; ORCA; OSIL

Calcium Channels, Calcium Signaling, Cancer, Cancer Metabolism, Energy Transfer Pathways, Integration Of Energy, Integration Of Energy Metabolism, Metabolic Signaling Pathway, Metabolic Signaling Pathways, Metabolism, Neuroscience, Neurotransmission, Pathways and Processes, Signal Transduction, Signaling Pathway

Autophagy receptor required for selective macroautophagy (aggrephagy) . Functions as a bridge between polyubiquitinated cargo and autophagosomes. Interacts ly with both the cargo to become degraded and an autophagy modifier of the MAP1 LC3 family. Along with WDFY3, involved in the formation and autophagic degradation of cytoplasmic ubiquitin-containing inclusions (p62 bodies, ALIS/aggresome-like induced structures) . Along with WDFY3, required to recruit ubiquitinated proteins to PML bodies in the nucleus. 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. Adapter that mediates the interaction between TRAF6 and CYLD. May be involved in cell differentiation, apoptosis, immune response and regulation of K+ channels. Involved in endosome organization by retaining vesicles in the perinuclear cloud: following ubiquitination by RNF26, attracts specific vesicle-associated adapters, forming a molecular bridge that restrains cognate vesicles in the perinuclear region and organizes the endosomal pathway for efficient cargo transport.

1. Hocking, L. J., Lucas, G. J. A., Daroszewska, A., Mangion, J., Olavesen, M., Cundy, T., Nicholson, G. C., Ward, L., Bennett, S. T., Wuyts, W., Van Hul, W., Ralston, S. H. Domain-specific mutations in sequestosome 1 (SQSTM1) cause familial and sporadic Paget's disease. Hum. Molec. Genet. 11: 2735-2739, 2002. 2. Joung, I., Strominger, J. L., Shin, J. Molecular cloning of a phosphotyrosine-independent ligand of the p56-lck SH2 domain. Proc. Nat. Acad. Sci. 93: 5991-5995, 1996. 3. Park, I., Chung, J., Walsh, C. T., Yun, Y., Strominger, J. L., Shin, J. Phosphotyrosine-independent binding of a 62-kDa protein to the src homology 2 (SH2) domain of p56-lck and its regulation by phosphorylation of ser-59 in the lck unique N-terminal region. Proc. Nat. Acad. Sci. 92: 12338-12342, 1995.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.