Recombinant Human Cysteine protease ATG4A (ATG4A)

Uniprot Id

Q8WYN0

Target Species

Human

Target Name

ATG4A

Target Full Name

Cysteine protease ATG4A

Target Function

Cysteine protease required for the cytoplasm to vacuole transport (Cvt) and autophagy. Cleaves the C-terminal amino acid of ATG8 family proteins 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. Preferred substrate is GABARAPL2 followed by MAP1LC3A and GABARAP. Has also an activity of delipidating enzyme for the PE-conjugated forms.

Target Subcellular Location

Cytoplasm.

Target Protein Families

Peptidase C54 family

Target Synonyms

AI627006; APG4 autophagy 4 homolog A; Apg4a; ATG4 autophagy related 4 homolog A (S. cerevisiae); ATG4 autophagy related 4 homolog A; ATG4A; ATG4A_HUMAN; Atg4al; AUT like 2 cysteine endopeptidase; AUT-like 2 cysteine endopeptidase; Autl2; Autophagin 2; Autophagin-2; Autophagy related 4A cysteine peptidase; Autophagy related cysteine endopeptidase 2; Autophagy related protein 4 homolog A; Autophagy-related cysteine endopeptidase 2; Autophagy-related protein 4 homolog A; AV169859; Cysteine protease ATG4A; hAPG4A; MGC107179

Target Background

Autophagy is the process by which endogenous proteins and damaged organelles are destroyed intracellularly. Autophagy is postulated to be essential for cell homeostasis and cell remodeling during differentiation, metamorphosis, non-apoptotic cell death, and aging. Reduced levels of autophagy have been described in some malignant tumors, and a role for autophagy in controlling the unregulated cell growth linked to cancer has been proposed. This gene encodes a member of the autophagin protein family. The encoded protein is also designated as a member of the C-54 family of cysteine proteases.