SQSTM1 Antibody – Rabbit Polyclonal

SQSTM1: an adapter protein which binds ubiquitin, shuttling proteins to the proteasome. Co-localizes along with the E3 ubiquitin ligase, TRAF6, to aggregates from Alzheimer's disease brains but not in control brain. May regulate the activation of NFKB1 by TNF-alpha, nerve growth factor (NGF) and interleukin-1. May play a role in titin 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. Forms ternary complexes with PKCZ and Kv-beta2 or PKCZ and GABBR3. Also interacts with KCNAB1, GABRR1, GABRR2 and GABRR3. Interacts with EBI3, LCK, RASA1, PKCZ , PKCI, NR2F2, NTRK1, NTRK2, NTRK3, NBR1, MEK5, TRIM55 and MAPKAPK5. Interacts with the proteasome subunits PSMD4 and PSMC2. Interacts with K63- polyubiquitinated MAPT/TAU. Interacts with IKBKB through PRKCZ and PRKCI. Interacts with NGFR through TRAF6 and bridges that complex to NTRK1. Forms a complex with MEK5 and PRKCZ or PRKCI. Component of a ternary complex with PAWR and PRKCZ. Upon TNF-alpha stimulation, interacts with RIPK1 problably bridging IKBKB to the TNF-R1 complex composed of TNF-R1/TNFRSF1A, TRADD and RIPK1. Forms a complex with JUB/Ajuba, PRKCZ and TRAF6. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Nuclear receptor co-regulator; Autophagy; Ubiquitin conjugating system

Chromosomal Location of Human Ortholog: 5q35

Cellular Component: nucleoplasm; PML body; lysosome; endoplasmic reticulum; late endosome; cytoplasm; autophagic vacuole; cytoplasmic vesicle; inclusion body; cytosol

Molecular Function: identical protein binding; protein serine/threonine kinase activity; protein binding; ubiquitin binding; protein homodimerization activity; protein kinase C binding; zinc ion binding; SH2 domain binding; receptor tyrosine kinase binding; protein kinase binding

Biological Process: regulation of Ras protein signal transduction; ubiquitin-dependent protein catabolic process; nerve growth factor receptor signaling pathway; immune system process; macroautophagy; positive regulation of apoptosis; protein heterooligomerization; endosome transport; protein amino acid phosphorylation; protein localization; response to stress; autophagy; positive regulation of transcription from RNA polymerase II promoter; positive regulation of protein amino acid phosphorylation; cell differentiation; regulation of I-kappaB kinase/NF-kappaB cascade; positive regulation of macroautophagy; negative regulation of apoptosis

Disease: Frontotemporal Dementia And/or Amyotrophic Lateral Sclerosis 3; Paget Disease Of Bone