Ras-related protein Rab-7a (RAB7A)

Ras-related protein Rab-7a (RAB7A) is a small GTPase from the Ras superfamily, primarily regulating transport from early endosomes to late endosomes and lysosomes, lysosomal biogenesis, and the fusion of endocytic vesicles[1][2][3]. It controls essential steps in endocytic trafficking, autophagy, mitophagy, lipophagy, apoptosis, and neurotrophin signaling. RAB7A's physiological significance is underscored by its specific role in neurons and interaction with NGF receptor TrkA, and it is involved in a variety of diseases including Charcot-Marie-Tooth type 2B neuropathy and certain cancers. Its proper function is necessary for maintenance of lysosomal integrity, intracellular signaling, cytoskeletal dynamics, and defense against infection. Though not directly targeted by approved drugs, its pathways intersect with therapeutic agents such as rapamycin (autophagy modulation). Disruption of RAB7A by mutation or pharmacological means poses notable safety and efficacy challenges due to its central role in cellular homeostasis[1][2][3].

Other names

Ras-related protein Rab-7aRAB7ARAB7CMT2BPRO2706Ras-associated protein RAB7RAB7, member RAS oncogene family

Inhibitors/modulators of Rab7A can block autophagosome-lysosome fusion, altering autophagic flux. Rapamycin: inhibits Rab7A dissociation from autolysosomes, affecting mTOR-dependent autophagy. Pathogen survival strategies: some drugs target pathogen processes dependent on host-Rab7A trafficking (seen in infection context).