6 days ago · Sequestosome 1 (SQSTM1, p62) is a ubiquitin binding protein involved in cell signaling, oxidative stress, and autophagy (1-4). It was first identified as a protein that binds to the SH2 domain of p56Lck (5) and independently found to interact with PKCζ (6,7).

Sequestosome-1 is a protein that in humans is encoded by the SQSTM1 gene. [5][6][7] Also known as the ubiquitin-binding protein p62, [8] it is an autophagosome cargo protein that targets other proteins that bind to it for selective autophagy.

本文综述了p62蛋白的结构特征、分子功能，并系统介绍其在蛋白质稳态和信号通路调控中的多种功能，总结了p62在疾病发生发展中的复杂性与多面性，以期为p62蛋白的功能与相关疾病研究提供参考。 关键词： SQSTM1/p62 蛋白酶体 自噬 疾病 肿瘤

Dec 17, 2020 · p62/SQSTM1 is a multiprotein interaction hub forming cellular punctate structures known as p62 bodies. p62 is centrally involved in the degradation of ubiquitinated cargo through autophagy, as well as in a wide range of signaling activities as part of the cellular response to nutrient sensing, oxidative stress, infection, immunity, and ...

Jul 18, 2014 · Our results demonstrate that p62/SQSTM1 expression is upregulated in mature compared with immature myeloid cells and reveal a pro-survival function of the NF-κB/SQSTM1 signaling axis during ...

Feb 26, 2021 · We found that transglutaminase 2 (TG2) inhibition reduced high-MW SQSTM1/p62 and SQSTM1/p62 puncta under NiCl2 stimulation, indicating that TG2 regulates SQSTM1/p62 protein homeostasis under NiCl2 stimulation. Our study demonstrated that nickel ion regulates autophagy flux and TG2 restricted nickel-dependent proteostasis. 1. Introduction.

Apr 23, 2020 · p62/SQSTM1, encoded by gene SQSTM1, is widely known as an adaptor protein of selective autophagy to promote aggregate-prone proteins for degradation. It is also a stress-induced scaffold protein involved in Nrf2 activation to resist oxidative stress.

Oct 20, 2016 · However, new evidence supports an autophagy-independent key role of the adaptor p62 (encoded by the gene Sqstm1) in signaling functions central to tumor initiation in the epithelium and suppression of tumor progression in the stroma.

Immunofluorescence analysis of SQSTM1/p62 in Hela using p62/SQSTM1 antibody. Autophagy receptor that interacts directly with both the cargo to become degraded and an autophagy modifier of the MAP1 LC3 family.

Oct 5, 2023 · S -acylation of p62 enhances the affinity of p62 for microtubule-associated protein 1 light chain 3 (LC3)-positive membranes and promotes autophagic membrane localization of p62 droplets, thereby leading to the production of small LC3-positive p62 droplets and efficient autophagic degradation of p62-cargo complexes.