Structure of alanine racemase from Oenococcus oeni with bound pyridoxal 5'-phosphate.

ABSTRACT: The crystal structure of alanine racemase from Oenococcus oeni has been determined at 1.7 Å resolution using the single-wavelength anomalous dispersion (SAD) method and selenium-labelled protein. The protein exists as a symmetric dimer in the crystal, with both protomers contributing to the two active sites. Pyridoxal 5'-phosphate, a cofactor, is bound to each monomer and forms a Schiff base with Lys39. Structural comparison of alanine racemase from O. oeni (Alr) with homologous family members revealed similar domain organization and cofactor binding.

SUBMITTER: Palani K 

PROVIDER: S-EPMC3539696 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature