A form of threonine dehydratase with two copies of the C-terminal domain pfam00585 is described by TIGR01124. This model describes a phylogenetically distinct form with a single copy of pfam00585. This form branches with the catabolic threonine dehydratase of E. coli; many members are designated as catabolic for this reason. However, the catabolic form lacks any pfam00585 domain. Many members of this model are found in species with other Ile biosynthetic enzymes. [Amino acid biosynthesis, Pyruvate family]
Jiyao W et al.(2023). "The conserved domain database in 2023.",