Predicted to enable guanyl-nucleotide exchange factor activity and rRNA binding activity. Predicted to be involved in mitochondrial membrane fusion and positive regulation of mitochondrial translation. Predicted to be located in mitochondrial inner membrane. Human ortholog(s) of this gene implicated in Williams-Beuren syndrome. Orthologous to human RCC1L (RCC1 like). [provided by Alliance of Genome Resources, Apr 2022]