AFG3-like matrix AAA peptidase subunit 2 (AFG3L2)

AFG3-like matrix AAA peptidase subunit 2 (AFG3L2) is an ATP-dependent metalloprotease of the mitochondrial inner membrane m-AAA protease complex, essential for the degradation and maturation of mitochondrial proteins[1][2][3]. It forms homo-oligomeric or hetero-oligomeric complexes (with paraplegin) and mediates proteolytic quality control of both soluble and membrane-bound substrates within mitochondria[1][3]. AFG3L2 possesses both ATPase activity (for substrate unfolding and translocation) and protease activity (for peptide bond hydrolysis), playing a critical role in mitochondrial proteostasis, neuronal development, and maintenance of axonal integrity[2][3]. Pathogenic mutations in AFG3L2 cause autosomal dominant spinocerebellar ataxia type 28 (SCA28) and have been linked to other neurodegenerative phenotypes[1][2]. There are currently no specific small molecules clinically approved to target AFG3L2 directly.

Other names

Mitochondrial inner membrane m-AAA protease component AFG3L2SPAX5AFG3-like protein 2Paraplegin-like proteinOPA12SCA28AFG3 ATPase family gene 3-like 2AFG3 ATPase family member 3-like 2ATPase family gene 3, yeast

Not applicable due to lack of known direct pharmacological modulators. Theoretically, drugs interacting with AFG3L2 would act as **enzyme inhibitors** or **modulators of mitochondrial proteostasis**.