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mTORC1

Meaning

mTORC1, or Mammalian Target of Rapamycin Complex 1, is a central serine/threonine protein kinase complex that acts as a primary cellular sensor for nutrients, energy status, and growth factors. This complex is a master regulator of anabolic processes, controlling cell growth, proliferation, protein synthesis, and lipid synthesis. Its activation is a crucial signal for building and repair, particularly in skeletal muscle, but chronic, excessive activation is implicated in aging, insulin resistance, and certain pathologies. Balancing mTORC1 activity is a key target in longevity and metabolic health research.