p62/SQSTM1 Products

p62/SQSTM1 Antibody (2C11)
p62/SQSTM1 Antibody (2C11)
Species: Hu, Mu, Rt, Bv, Ha, Rb
Applications: WB, ELISA, ICC/IF, IHC, IHC-Fr, IHC-P, IP
Host: Mouse Monoclonal
p62/SQSTM1 Antibody
p62/SQSTM1 Antibody
Species: Hu, Mu, Rt, Pm-Or
Applications: WB, IHC, IHC-P, IP, KO
Host: Rabbit Polyclonal
Human, Mouse, Rat p62/SQSTM1 ...
Human, Mouse, Rat p62/SQSTM1 ELISA...
Species: Hu, Mu, Rt
Applications: ELISA
p62/SQSTM1 Overexpression Lys ...
p62/SQSTM1 Overexpression Lysate
Species: Hu
Applications: WB
Recombinant Human p62/SQSTM1 ...
Recombinant Human p62/SQSTM1 His P...
Species: Hu
Applications: In vitro, PAGE
p62/SQSTM1 Antibody Blocking ...
p62/SQSTM1 Antibody Blocking Peptide
Species: Hu
Applications: AC
p62/SQSTM1 Antibody Blocking ...
p62/SQSTM1 Antibody Blocking Peptide
Species: Hu
Applications: AC


p62/SQSTM1 (ubiquitin-binding protein p62/Sequestrosome-1) is an intracellular protein (theoretical molecular weight 47.7 kDa) which localizes to the cytoplasm, nucleus, autophagosomes and lysosomes in all tissues (1). Structurally, p62/SQSTM1 consists of multiple domains (e.g., Phox1 and Bem1p-PB1, zinc finger-ZZ, TRAF6 binding domain-TB, Keap1-interacting region-KIR, LC3 interacting region-LIR and ubiquitin-associated domain-UBA) for interaction with various protein targets. Additional domains include nuclear export (NES) and nuclear localization signals (NLS1 and NLS2). p62/SQSTM1 is a multifunctional scaffold protein which forms oligomers with itself or with other proteins through interactions with PB1 domains.

Abnormal function of p62/SQSTM1 is associated with a range of disease states such as neurodegeneration, cancer, and metabolic disorders (2). Mutations in the p62/SQSTM1 sequence have been linked to Paget's disease of the bone, amyotrophic lateral sclerosis, and frontotemporal lobar degeneration. In Parkinson's disease, p62/SQSTM1 has been linked to microglia activation and subsequent neuroinflammation (3). Functionally, p62/SQSTM1 is involved in a broad range of cellular processes such as amino acid sensing by interaction with mTORC1, oxidative stress response through interaction with Keap1, and targeting cargo for autophagy by interacting with ubiquitin labeled proteins (1).

To induce selective autophagy, p62/SQSTM1 forms long oligomers or helical filaments which interact with LC3 and ubiquitin labeled proteins and lead to the initiation of the autophagosome formation (2). p62/SQSTM1 is not only a selective autophagy receptor but also an autophagy substrate, as its engulfed by the autophagosome and degraded by the autophagolysosome. Monitoring LC3 levels is the standard for assessing autophagic flux, however monitoring p62/SQSTM1 levels by Western blot in the presence and absence of autophagy inhibitors (e.g., Chloroquine) is also a common practice (4). Besides its activity as a selective autophagy receptor, p62/SQSTM1 also plays a role as an adaptor in signaling cascades leading to NFkB activation downstream of TNF-R, IL-1 beta R, TrkA and p75NTR. Briefly, for NFkB signaling downstream of the TNF-R activation, p62/SQSTM1 engages RIP1 kinase and PKC iota/lambda through the ZZ and PB1 domains, respectively (5).


1.Katsuragi, Y., Ichimura, Y., & Komatsu, M. (2015). P62/SQSTM1 functions as a signaling hub and an autophagy adaptor. FEBS Journal. https://doi.org/10.1111/febs.13540

2. Sanchez-Martin, P., & Komatsu, M. (2018). p62/SQSTM1 - Steering the cell through health and disease. Journal of Cell Science. https://doi.org/10.1242/jcs.222836

3. Yao, L., Zhu, Z., Wu, J., Zhang, Y., Zhang, H., Sun, X., ... Lu, G. (2019). MicroRNA-124 regulates the expression of p62/p38 and promotes autophagy in the inflammatory pathogenesis of Parkinson's disease. The FASEB Journal. https://doi.org/10.1096/fj.201900363r

4 Klionsky, D. J., Abdelmohsen, K., Abe, A., Abedin, M. J., Abeliovich, H., Arozena, A. A., ... Zughaier, S. M. (2016). Guidelines for the use and interpretation of assays for monitoring autophagy (3rd edition). Autophagy. https://doi.org/10.1080/15548627.2015.1100356

5. Bitto, A., Lerner, C. A., Nacarelli, T., Crowe, E., Torres, C., & Sell, C. (2014). p62/SQSTM1 at the interface of aging, autophagy, and disease. Age. https://doi.org/10.1007/s11357-014-9626-3


Uniprot Human
Product By Gene ID 8878
Alternate Names
  • A170
  • Autophagy Receptor P62
  • DMRV
  • EBI3-associated protein of 60 kDa
  • EBI3-associated protein p60
  • ORCA
  • OSIL
  • oxidative stress induced like
  • p60PDB3
  • p62
  • P62
  • p62B
  • Paget disease of bone 3
  • PDB3
  • phosphotyrosine independent ligand for the Lck SH2 domain p62
  • Phosphotyrosine-independent ligand for the Lck SH2 domain of 62 kDa
  • sequestosome 1
  • sequestosome-1
  • Ubiquitin-binding protein p62
  • ZIP3
  • ZIP3

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Related p62/SQSTM1 Blog Posts

Check out the latest blog posts on p62/SQSTM1.
Required proteins for p62/SQSTM1 regulation and a role for p62/SQSTM1 in neuronal autophagy
Autophagy is a crucial cellular process that clears the cell of protein aggregates, toxins, and damaged cell products. Accumulation of toxins, damaged cell products and unwanted proteins has been proven to play a role in aging and many forms of dis...    Read more.
What are the major differences between Apoptosis, Necroptosis & Autophagy?
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Key Targets in Apoptosis, Necroptosis, and Autophagy
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p62/SQSTM1 (sequestosome 1)
p62/SQSTM1 (sequestosome 1) is ubiquitously-expressed cytoplasmic/adaptor protein. SQSTM1 functions as a signaling hub for various signal transduction pathways involved in apoptosis, cell differentiation, apoptosis, immune response, and K+ channel reg...    Read more.
Brain size matters: MTOR regulates autophagy and number of cortical interneurons
By Jamshed Arslan Pharm.D. Interneurons transmit impulses between other neurons, in part, to facilitate the birth of neurons. Cortical interneurons themselves arise from the progenitors in the ventral telencephalo...    Read more.
CaMKII stimulates autophagic degradation of 'ID', a new frontier against cancer
By Yoskaly Lazo-Fernandez, PhD The field of Cancer Stem Cell (CSC) research has been gaining traction in recent years1. CSCs are a minority group of cells (usually about 1 in 10000) within solid tumors of hematolog...    Read more.
Cleaner gone bad: Autophagy regulates motor neuron loss in spinal muscular atrophy
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Autophagy inhibition in pediatrics: One physician-scientist’s brave decision
By Christina Towers, PhD. The current time from when a discovery is first made on the bench to when that discovery might translate into an approved therapy in cancer patients is an astounding 10-15 years. Scientis...    Read more.
Nuclear LC3: Why is it there and what is it doing?
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Lysosomal Dysfunction is Linked to Exosomal Secretion
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Crosstalk Between Oxidative Stress and Autophagy
By Christina Towers, PhD. Role of Reactive Species in Cellular FunctionOxidative stress is a byproduct of an imbalance between oxidants and antioxidants present in the cell, resulting in dysfunctional redox si...    Read more.
Measuring Autophagic Flux with LC3 protein levels: The do's and don'ts
By Christina Towers, PhD. Autophagy is a dynamic cellular recycling process that can be influenced by many different external and internal stimuli. The most commonly used assay to measure autophagy is a western blot f...    Read more.
How a cell "reaches" out for help
By Christina Towers, PhD. Parkinson's disease is a debilitating neurodegenerative condition defined by the accumulation of alpha-synuclein-containing (alpha-SYN) intra-cytoplasmic inclusions, called Lewy bodies. The ...    Read more.
RNA-binding protein Staufen1 conspires with Atxn2 in stress granules to cause neurodegeneration by dysregulating RNA metabolism
By Jamshed Arslan Pharm.D. Spinocerebellar ataxia type 2 (SCA2) is a movement disorder characterized by neurodegeneration. The cause of this autosomal dominant disease is a mutation in the RNA processing gene Atxn2,...    Read more.
How to visualize autophagy by microscopy
By Christina Towers, PhD Autophagy is a recycling process that relies on the formation of a unique organelle termed an autophagosome. An elegant way to monitor autophagy is through various microscopy techniques to...    Read more.
Autophagic flux: Is p62 a good indicator?
By Christina Towers, PhD Is p62 a good indicator of autophagic flux? The short answer: Yes … but … SQSTM1 encodes the cargo adaptor protein, p62, which interacts with autophagic substrates and delivers them to aut...    Read more.
Optogenetic Control of Mitophagy: AMBRA1 based mitophagy switch
By Christina Towers, PhD Mitophagy in the BrainSelective autophagic degradation of damaged mitochondria, known as mitophagy, has been described as a cyto-protective process. Accordingly, defects in mitophagy h...    Read more.
Autophagy and Metastasis
  By Christina Towers, PhD The majority of cancer patients die from metastatic disease at secondary sites. The threshold to undergo metastasis is high. Only a minority of cancer cells acquire invasive phenotypes...    Read more.
Autophagy Research Update: What a difference a year makes!
By Christina Towers, PhD Over the last two decades the field of autophagy has exploded! Innovative techniques, comprehensive analysis and disease-relevant models have yielded basic and clinical discoveries of conseque...    Read more.
Understanding Mitophagy Mechanisms: Canonical PINK1/Parkin, LC3-Dependent Piecemeal, and LC3-Independent Mitochondrial Derived Vesicles
By Christina Towers, PhD What is Mitophagy?The selective degradation of mitochondria via double membrane autophagosome vesicles is called mitophagy. Damaged mitochondria can generate harmful amounts of reactive ox...    Read more.
LC3/LC3B - measuring autophagosome formation and autophagic flux
Microtubule-associated protein-1 light chain 3 (LC3/LC3B) is a ubiquitin-like protein involved in the formation of the autophagosome. It is homologous to the yeast Atg8 protein. Autophagosomes are important for the degradation and recycling of intr...    Read more.
p62/SQSTM1 - targeting ubiquitinated proteins for autophagic degradation
During autophagy ubiquitinated cargo or substrates are engulfed in a double-membrane autophagosome and transported to the lysosome for degradation. This process is important for maintaining cellular homeostasis and for degrading damaged organelles...    Read more.
ATG4C - A regulator of the early steps of autophagosome assembly
Autophagy is an important cellular process that maintains homeostasis by degrading and recycling damaged proteins and organelles. Autophagy receptors, such as p62/SQSTM1, recognize these intracellular cargo and mediate their engulfment by the doubl...    Read more.
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