Enables chaperone binding activity and enzyme binding activity. Involved in cardiac muscle cell differentiation; intracellular protein transport; and response to 3,3',5-triiodo-L-thyronine. Located in mitochondrial inner membrane. Biomarker of diabetic retinopathy. Orthologous to human TIMM44 (translocase of inner mitochondrial membrane 44). [provided by Alliance of Genome Resources, Apr 2022]