Enables ethanolamine-phosphate cytidylyltransferase activity. Predicted to be involved in phosphatidylethanolamine biosynthetic process. Human ortholog(s) of this gene implicated in hereditary spastic paraplegia. Orthologous to human PCYT2 (phosphate cytidylyltransferase 2, ethanolamine). [provided by Alliance of Genome Resources, Apr 2022]