This family consists of taurine catabolism dioxygenases of the TauD, TfdA family. TauD from E. coli is a alpha-ketoglutarate-dependent taurine dioxygenase. This enzyme catalyzes the oxygenolytic release of sulfite from taurine. TfdA from Burkholderia sp. is a 2,4-dichlorophenoxyacetic acid/alpha-ketoglutarate dioxygenase. TfdA from Alcaligenes eutrophus JMP134 is a 2,4-dichlorophenoxyacetate monooxygenase. Also included are gamma-Butyrobetaine hydroxylase enzymes EC:188.8.131.52.