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 ofautophagy have been described in some malignant tumors, and a role forautophagy in controlling the unregulated cell growth linked to cancer has been proposed.
Function: Probably involved in formation of autophagosomal vacuoles (autophagosomes).
Subunit: 3 different light chains, LC1, LC2 and LC3, can associate with MAP1A and MAP1B proteins.
Subcellular location: Cytoplasm. Intracytoplasmic membrane, Lipid-anchor. Cytoplasmic vesicle, autophagosome membrane, Lipid-anchor. Note: LC3-II binds to the autophagic membranes.
Tissue specificity: Most abundant in placenta, lung and ovary. The precursor molecule is cleaved by APG4B/ATG4B to form the cytosolic form, LC3-I. This is activated by APG7L/ATG7, transferred to ATG3 and conjugated to phospholipid to form the membrane-bound form, LC3-II. Also known as: Microtubule-associated proteins 1A/1B light chain 3C, MAP1LC3C, MAP1A/MAP1B LC3 C, MAP1A/1B light chain 3 C, MAP1 light chain 3-like protein 3,autophagy-related protein LC3 C,autophagy-related ubiquitin-like modifier LC3C.