Anti-ATG4B (Clone 8A5)

Autophagy-related 4B (ATG4B), also known as autophagin-1, is a cysteine protease and a member of the C54 protease family with dual roles in the progression of autophagy. It catalyzes the irreversible proteolytic cleavage of human homologs of yeast ATG8 belonging to the microtubule-associated protein 1 A/B-light chain 3 (MAP1LC3/LC3) and the GABA receptor-associated protein (GABARAP) subfamilies, including LC3, GATE16, GABARAP, and ATG8L, to expose a C-terminal glycine residue that is essential to formation of the autophagosome. It also catalyzes the reversible deconjugation of phosphatidylethanolamine from C-terminal glycine lipid-conjugated Atg8 homologs. ATG4B expression is increased in CD34+ chronic myeloid leukemia (CML) stem and progenitor cells and knockdown of ATG4B expression increases accumulation of LC3-II and p62, indicating impaired autophagy, and reduces the viability and inhibits proliferation of CD34+ CML cells. Atg4-/- mice exhibit systemic decreases in basal and induced autophagy as well as increased susceptibility to colitis induced by dextran sodium sulfate (DSS) and pulmonary fibrosis induced by bleomycin (Cay-13877). Cayman's ATG4B Monoclonal Antibody (Clone 8A5) can be used for Western blot and ELISA applications. The antibody recognizes ATG4B at approximately 44 kDa from human samples.Synonyms: hAPG4B, AUT-like 1 Cysteine Endopeptidase, Autophagin-1, Autophagy-related Protein 4 Homolog B, Cysteine Protease ATG4B. Immunogen: Full-length human recombinant ATG4B protein. Clone Designation: 8A5. MW: ~44 kDa. Formulation: (Request formulation change), 100 µg of protein G-purified monoclonal antibody. Storage Buffer: PBS, pH 7.2, with 50% glycerol and 0.02% sodium azide. Host: Mouse. Isotype: IgG1. Applications: Elisa, IHC, IP, and WB. Cross Reactivity: (-) ATG8 recombinant protein. UniProt Accession #: Q9Y4P1.