Enables enzyme binding activity. Involved in intracellular protein transport; positive regulation of protein processing; and response to 3,3',5-triiodo-L-thyronine. Located in mitochondrial inner membrane. Biomarker of muscular atrophy. Orthologous to human TIMM23 (translocase of inner mitochondrial membrane 23). [provided by Alliance of Genome Resources, Apr 2022]