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Protein Page:
GABARAP (human)

GABARAP is a ubiquitin-like protein that is a constituent of the ATG8-conjugation system, one of two evolutionarily conserved phosphatidylethanolamine conjugation systems necessary for the formation of the autophagosome. The human ATG8 system includes seven ubiquitin-like light chain proteins (LCPs) that are homologs of yeast LC3: MAP1LC3A, -B, -C, GABARAP, GABARAPL1, -2, and -3. Pro-LCPs are cleaved by ATG4B to expose a C-terminal glycine residue, the cytosolic LCP-I form. The exposed C-terminus is conjugated to the head group amine of phosphatidylethanolamine (PE) through an amide bond by a sequence of ubiquitination-like reactions that involves an E1 (ATG7), an E2 (ATG3), and an E3 (a complex including ATG5, ATG12, and ATG16L). The PE-congugated form (LCP-II) is tightly associated with the autophagosomal membrane. The LCP-II forms can also be delipidated by the ATG4 proteases: most of the LCPs are delipidated and liberated from the membrane before autophagosomes fuse with lysosomes. May play a role in intracellular transport of GABA(A) receptors and its interaction with the cytoskeleton. Belongs to the MAP1 LC3 family. Interacts with GPHN and NSF. Interacts with GABRG2, beta-tubulin and ULK1. Note: This description may include information from UniProtKB.
Protein type: Adaptor/scaffold; Autophagy; Microtubule-binding; Ubiquitin-like modifier; Vesicle
Chromosomal Location of Human Ortholog: 17p13.1
Reference #:  O95166 (UniProtKB)
Alt. Names/Synonyms: FLC3B; FLJ25768; GABA(A) receptor-associated protein; GABARAP; Gamma-aminobutyric acid receptor-associated protein; GBRAP; MGC120154; MGC120155; MM46
Gene Symbols: GABARAP
Molecular weight: 13,918 Da
Basal Isoelectric point: 8.73  Predict pI for various phosphorylation states
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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