Recombinant Mouse Cysteine protease ATG4B (Atg4b)

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Code CSB-EP807332MOb1
Size $256
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Greater than 85% as determined by SDS-PAGE.
Not Test
Target Names
Uniprot No.
Research Area
Alternative Names
AUT-like 1 cysteine endopeptidase;Autophagy-related cysteine endopeptidase 1;Autophagin-1;Autophagy-related protein 4 homolog B;MmAPG4B
Mus musculus (Mouse)
Expression Region
Target Protein Sequence
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
49.4 kDa
Protein Length
Full Length
Tag Info
N-terminal 10xHis-tagged and C-terminal Myc-tagged
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
3-7 business days
Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.
Datasheet & COA
Please contact us to get it.

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Target Background

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.
Gene References into Functions
  1. At the microtubule-actin crossover junction, ATG4B detaches LC3B from melanosomal membranes by enzymatic delipidation. PMID: 28598240
  2. ATG4B contains a C-terminal LIR motif important for binding and efficient cleavage of mammalian orthologs of yeast Atg8 PMID: 28287329
  3. miR-34a might regulate the autophagic activity and can cause injury in ischemia reperfusion injured renal tubular epithelial cells (RTEC) via targeting Atg4B. Atg4B knockdown inhibited autophagy in RTECs. PMID: 26406385
  4. the ATG4B protease and autophagy play a crucial role protecting epithelial cells against bleomycin-induced stress and apoptosis PMID: 25906080
  5. REDD1/TXNIP complex expression is sufficient to induce reactive oxygen species, suppress ATG4B activity and activate autophagy. PMID: 25916556
  6. these findings demonstrate a role for Ser-383 and Ser-392 phosphorylation of ATG4B in control of autophagy. PMID: 26378241
  7. mTOR inhibition alleviates Huntington's disease progression by inducing Atg4b-dependent autophagic flux. PMID: 23861892
  8. An autophagy-related gene, Atg4b, is identified as a de novo target gene of C/EBP BETA and is shown to play an important role in 3T3-L1 adipocyte differentiation. PMID: 23754749
  9. The Atg4b participates in polarized secretion of lysosomal contents into the extracellular space by directing lysosomes to fuse with the plasma membrane. PMID: 22055344
  10. Genetic inactivation of mouse Atg4b resulted in amorphous globular bodies in the neuropil of the deep cerebellar nuclei and adjacent vestibular nuclei and a mild but measurable impairment of motor performance on the Rotarod. PMID: 20634410
  11. The Apg4B/autophagin-1 protease thus serves as a processing/deconjugating enzyme for these four highly divergent mammalian Apg8 homologues, GATE-16, MAP1-LC3, GABARAP, and Apg8L. PMID: 14530254
  12. These results show that the lipidation of LC3 paralogues is involved in the completion of autophagosome formation in mammalian cells. PMID: 18768752

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Subcellular Location
Protein Families
Peptidase C54 family
Database Links
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