Crystallization and X-ray diffraction analysis of an L-arabinonate dehydratase from Rhizobium leguminosarum bv. trifolii and a D-xylonate dehydratase from Caulobacter crescentus.

ABSTRACT: L-Arabinonate dehydratase (EC 4.2.1.25) and D-xylonate dehydratase (EC 4.2.1.82) are two enzymes that are involved in a nonphosphorylative oxidation pathway of pentose sugars. L-Arabinonate dehydratase converts L-arabinonate into 2-dehydro-3-deoxy-L-arabinonate, and D-xylonate dehydratase catalyzes the dehydration of D-xylonate to 2-dehydro-3-deoxy-D-xylonate. L-Arabinonate and D-xylonate dehydratases belong to the IlvD/EDD family, together with 6-phosphogluconate dehydratases and dihydroxyacid dehydratases. No crystal structure of any L-arabinonate or D-xylonate dehydratase is available in the PDB. In this study, recombinant L-arabinonate dehydratase from Rhizobium leguminosarum bv. trifolii (RlArDHT) and D-xylonate dehydratase from Caulobacter crescentus (CcXyDHT) were heterologously exp

SUBMITTER: Rahman MM 

PROVIDER: S-EPMC4973301 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature