Ogataea polymorpha is a methylotrophic yeast with unusual characteristics. It is used as a protein factory for pharmaceuticals. Ogataea polymorpha belongs to a limited number of methylotrophic yeast species – yeasts that can grow on methanol. The range of methylotrophic yeasts includes Candida boidinii, Pichia methanolica, Pichia pastoris and Ogataea polymorpha. O. polymorpha is taxonomically a species of the Saccharomycetaceae family.