Recombinant Human TSC-1 protein

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Tuberous Sclerosis Complex 1 (TSC-1) also known as hamartin is a protein with a molecular mass of approximately 130 kDa. It plays a direct role in cellular signaling and regulatory functions. TSC-1 is expressed broadly across tissues which suggests its importance in maintaining normal cellular physiology. It interfaces with various signaling molecules and directly interacts with TSC-2 to form a protein complex.

Biological function summary

TSC-1 plays a regulatory role in cell growth and proliferation. It forms a complex with TSC-2 also known as tuberin which is important for its function. This complex acts as a GAP (GTPase-activating protein) toward Rheb a small GTPase inhibiting the mTOR signaling pathway. The proper regulation of this pathway ensures controlled cell size and growth emphasizing the importance of the TSC-1/TSC-2 complex in cellular regulation.

Pathways

TSC-1 operates within the mTOR signaling pathway to influence cellular processes like autophagy and protein synthesis. It also relates to the PI3K/AKT pathway one that is involved in the regulation of cell survival and metabolism. By interacting with TSC-2 in these pathways TSC-1 modulates the inhibition of mTORC1 thereby impacting cellular homeostasis and growth.

Defects in TSC-1 can lead to tuberous sclerosis complex a condition characterized by benign tumors in multiple organs. Mutations in TSC-1 and its partner TSC-2 disrupt normal cellular functions leading to this disease. Additionally aberrations in the mTOR pathway influenced by TSC-1 malfunction have associations with certain cancers highlighting the importance of TSC-1 in maintaining cell proliferation and signaling balance.