TraB domain-containing protein (TRABD)

TraB domain-containing protein (TRABD) is a conserved outer mitochondrial membrane protein and a member of the Tiki/TraB superfamily, which also includes putative metalloproteases[1]. TRABD’s primary molecular function appears to be tethering mitochondrial outer membranes and participating in mitochondrial fusion[3]. Loss of TRABD disrupts mitochondrial respiration, lowers ATP production, increases reactive oxygen species, alters mitochondrial dynamics, and impairs cell proliferation[1]. TRABD modulates mitophagy and mitochondrial quality control, likely by interacting with PGAM5 and influencing other mitochondrial transport proteins such as RHOT1/2 (Miro1/2)[1]. In mouse models, TRABD deficiency exacerbates ischemia–reperfusion-induced renal injury by promoting mitochondrial fragmentation and damage, indicating an important protective role in kidney stress response[1]. Overexpression of TRABD exacerbates tau-induced neurodegeneration in animal models, suggesting a potential connection to age-related neurodegenerative diseases[1]. The protein’s precise structure and any potential metalloprotease activity remain under investigation. There are currently no therapeutic drugs known to target TRABD directly, and its role as a biomarker or safety concerns in clinical settings have not been established[1][2][3].

Other names

TTG2PP2447Protein TTG2LP6054traB domain-containing protein