Predicted to enable GDP-mannose 4,6-dehydratase activity. Predicted to be involved in 'de novo' GDP-L-fucose biosynthetic process and GDP-mannose metabolic process. Predicted to be active in cytoplasm. Is expressed in several structures, including alimentary system; ear; nervous system; respiratory system; and skeleton. Human ortholog(s) of this gene implicated in open-angle glaucoma. Orthologous to human GMDS (GDP-mannose 4,6-dehydratase). [provided by Alliance of Genome Resources, Apr 2022]