Domains similar to fish antifreeze type III protein
Altronate dehydratase (EC 4.2.1.7) converts D-altronate into 2-dehydro-3-deoxy-D-gluconate and is part of a bacterial pathway for the degradation of D-galacturonate. D-galactarate dehydratase (EC 4.2.1.42) eliminates water from D-galactarate to yield 5-dehydro-4-deoxy-D-glucarate, initializing the degradation of D-galactarate. The function of the SAF domain in these enzymes is not clear. It may participate in dimerization.
Jiyao W et al.(2023). "The conserved domain database in 2023.",