Protein
L-talarate/galactarate dehydratase
Organism
Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
Function
Catalyzes the efficient dehydration of both L-talarate and galactarate to 5-keto-4-deoxy-D-glucarate. Also catalyzes the epimerization of L-talarate to galactarate; epimerization occurs in competition with dehydration. Is required for the utilization of L-talarate as a carbon source. Also functions in galactarate utilization. Is not active on other acid sugars.
Similarity
Belongs to the mandelate racemase/muconate lactonizing enzyme family.
Sequence
MALSANSDAVTYAKAANTRTAAETGDRIEWVKLSLAFLPLATPVSDAKVLTGRQKPLTEVAIIIAEIRSRDGFEGVGFSYSKRAGGQGIYAHAKEIADNLLGEDPNDIDKIYTKLLWAGASVGRSGMAVQAISPIDIALWDMKAKRAGLPLAKLLGAHRDSVQCYNTSGGFLHTPLDQVLKNVVISRENGIGGIKLKVGQPNCAEDIRRLTAVREALGDEFPLMVDANQQWDRETAIRMGRKMEQFNLIWIEEPLDAYDIEGHAQLAAALDTPIATGEMLTSFREHEQLILGNASDFVQPDAPRVGGISPFLKIMDLAAKHGRKLAPHFAMEVHLHLSAAYPLEPWLEHFEWLNPLFNEQLELRDGRMWISDRHGLGFTLSEQARRWTQLTCEFGKRP