Enables N-acylneuraminate-9-phosphate synthase activity. Predicted to be involved in glycosylation. Located in cytosol. Is expressed in several structures, including alimentary system; sensory organ; skeleton; skin; and tarsus. Human ortholog(s) of this gene implicated in spondyloepimetaphyseal dysplasia, Genevieve-type. Orthologous to human NANS (N-acetylneuraminate synthase). [provided by Alliance of Genome Resources, Apr 2022]