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Anti-LC3B antibody produced in rabbit

Merck KGaA, Darmstadt, GermanyL7543Available: Worldwide

~1 mg/mL, affinity isolated antibody, buffered aqueous solution

Merck KGaA, Darmstadt, Germany

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Microtubule-associated protein 1 light chain 3 (MAPLC3/LC3) was first identified in rat as a protein that co-purifies with microtubule-associated protein 1A and 1B from rat brain. LC3 exists in cells in two forms. One is cytoplasmic, LC3-I (18 kDa) and the other, LC3-II (16 kDa) is associated with the autophagosome membrane. LC3-I is modified to a membrane-bound form, LC3-II (a LC3-phospholipid conjugate), by mammalian autophagy related protein 7 (Atg7) and Atg3, which are E1- and E2-like enzymes, respectively. Three human orthologs of the rat LC3, named MAP1LC3A/LC3A, MAP1LC3B/LC3B, and MAP1LC3C/ LC3C, were identified. The human proteins exhibit two forms representing the cytosolic (type I) and the membrane associated (type II) forms. The three human isoforms show different expression patterns in human tissues.

The gene MAP1LC3B (microtubule associated protein 1 light chain 3 β) is a homolog of ATG8 gene, an autophagy-related gene in yeast. The encoded protein is called pro-MAP1LC3B, a pro-form that is cleaved by ATG4 to produce a cytosolic form called MAP1LC3B-I.

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