Predicted to enable 5S rRNA binding activity and thiosulfate sulfurtransferase activity. Predicted to be involved in epithelial cell differentiation; rRNA import into mitochondrion; and transsulfuration. Predicted to be located in mitochondrial matrix. Predicted to be active in mitochondrion. Orthologous to human TST (thiosulfate sulfurtransferase). [provided by Alliance of Genome Resources, Apr 2022]