Enables UDP-glucose:hexose-1-phosphate uridylyltransferase activity. Involved in UDP-glucose catabolic process and galactose metabolic process. Predicted to be located in Golgi apparatus. Predicted to be active in cytoplasm. Human ortholog(s) of this gene implicated in classic galactosemia. Orthologous to human GALT (galactose-1-phosphate uridylyltransferase). [provided by Alliance of Genome Resources, Apr 2022]