Ideonella sakaiensis is a gram negative , aerobic and rod shaped microorganism, hence it does not form spores. In-terms of physical appearance, I. sakaiensis colonies examined on the agar plate are colorless, smooth and circular however sizes varies from 0.5-1.5 μm .The individual cells of the organism are motile and have a single flagellum. I. sakaiensis tests positive for oxidase and catalase. The bacterium grows at a pH range of 5.5 to 9.0 (optimally 7 to 7.5) and a temperature of 15–42 °C (optimally at 30–37 °C).