Mitochondrial ribosome-associated GTPase 2 (MTG2)

Mitochondrial ribosome-associated GTPase 2 (MTG2), also known as GTPBP5, is a mitochondrial Obg-family GTPase essential for the late stages of large mitochondrial ribosomal subunit (mtLSU) assembly[1][2]. MTG2 functions as a molecular switch, regulating critical mitochondrial processes including ribosome biogenesis and protein synthesis[1][2]. It directly interacts with 16S rRNA and specific ribosomal proteins and plays a checkpoint role by coordinating with assembly factors to ensure only mature ribosomal subunits become part of the active ribosome[1]. Loss of MTG2 impairs mitochondrial protein synthesis and overall energy metabolism, with pathological consequences in high-energy tissues[2]. MTG2 is evolutionarily conserved and specifically associated with mitochondria, operating as a peripheral protein of the inner mitochondrial membrane[3]. Key points: - MTG2 is not considered a primary therapeutic target (such as a receptor, transporter, or typical drug target) in current literature; its dysfunction has pathogenic consequences, but no drugs or direct modulators are reported[1][2]. - Main role: Late-stage assembly and maturation of the mitochondrial large ribosomal subunit, crucial for mitochondrial protein synthesis and energy production[1][2][3]. - Pathology: Mutations or dysfunction in MTG2 can contribute to mitochondrial diseases, especially those affecting energy-demanding organs[2]. - Family/Classification: Belongs to the Obg family of GTPases, classified enzymatically as a GTPase and as a mitochondrial ribosome assembly factor[1][2][3]. If you require fields such as interacting drugs, mechanism of action, biomarkers, or safety concerns specifically for drug development, current sources do not report them for MTG2. The gene's disruption affects mitochondrial function, but it is not an established drug target at present[1][2][3].

Other names

GTPBP5Protein obg homolog 1OBGH1ObgH1dJ1005F21.2FLJ10741mitochondrial ribosome-associated GTPase 2GTP-binding protein 5