|Application ||WB, IHC-P, E|
|Other Accession||Q8BGE6, Q6DG88, Q6PZ02, Q6PZ03|
|Predicted||Bovine, Chicken, Zebrafish, Mouse|
|Calculated MW||44294 Da|
|Antigen Region||258-284 aa|
|Other Names||Cysteine protease ATG4B, 3422-, AUT-like 1 cysteine endopeptidase, Autophagin-1, Autophagy-related cysteine endopeptidase 1, Autophagy-related protein 4 homolog B, hAPG4B, ATG4B, APG4B, AUTL1, KIAA0943|
|Target/Specificity||This ATG4B antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 258-284 amino acids from human ATG4B.|
|Format||Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is purified through a protein A column, followed by peptide affinity purification.|
|Storage||Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||ATG4B Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||APG4B, AUTL1, KIAA0943|
|Function||Cysteine protease required for the cytoplasm to vacuole transport (Cvt) and autophagy. Cleaves the C-terminal amino acid of ATG8 family proteins MAP1LC3, GABARAPL1, GABARAPL2 and GABARAP, to reveal a C-terminal glycine. Exposure of the glycine at the C- terminus is essential for ATG8 proteins conjugation to phosphatidylethanolamine (PE) and insertion to membranes, which is necessary for autophagy. Has also an activity of delipidating enzyme for the PE-conjugated forms.|
|Tissue Location||Mainly expressed in the skeletal muscle, followed by brain, heart, liver and pancreas|
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Provided below are standard protocols that you may find useful for product applications.
Macroautophagy is the major inducible pathway for the general turnover of cytoplasmic constituents in eukaryotic cells, it is also responsible for the degradation of active cytoplasmic enzymes and organelles during nutrient starvation. Macroautophagy involves the formation of double-membrane bound autophagosomes which enclose the cytoplasmic constituent targeted for degradation in a membrane bound structure, which then fuse with the lysosome (or vacuole) releasing a single-membrane bound autophagic bodies which are then degraded within the lysosome (or vacuole). APG4, a cysteine protease required for autophagy, cleaves the C-terminal part of MAP1LC3 to form the activated molecule LC3-I. LC3-I is subsequently conjugated with phosphatidylethanolamine at the C-terminal glycine to form LC3-II, a marker for autophagy via its capacity to bind to autophagosomes.
Tanida, I., et al., J. Biol. Chem. 279(35):36268-36276 (2004).
Marino, G., et al., J. Biol. Chem. 278(6):3671-3678 (2003).
Kabeya, Y., et al., J. Cell. Sci. 117 (Pt 13), 2805-2812 (2004) (): ().
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