master activator of flagellar biosynthesis, modulator of [[protein|D343D2096664A972026D911E7A17A35C7B1CD1C9]] activity, converts [[protein|D343D2096664A972026D911E7A17A35C7B1CD1C9]]-P from a repressor to an activator of the fla-che operon, enhances [[gene|7024E4162A6D827069F882FDEACA696EBC05DD40]] transcription, controls the number of flagellar basal bodies, inactive pseudogene in strain 168