Abstract
Salicylate 5-hydroxylase (SAL5H), m-hydroxybenzoate 6-hydroxylase (MHB6H), and p-hydroxybenzoate 3-hydroxylase (PHB3H) from Gram-positive Rhodococcus erythropolis strain S1 were characterized physicochemically and immunochemically. The subunit size and amino acid composition of SAL5H, MHB6H, and PHB3H from strain S1 showed properties similar to those of other flavin-containing aromatic compound monooxygenases such as p-hydroxybenzoate hydroxylase and salicylate 1-hydroxylase (SAL1H), belonging to p-hydroxybenzoate hydroxylase-class, except for homotetrameric structure and cofactor specficity. The N-terminal amino acid sequence of MHB6H from strain S1 indicated significant similarity of ADP-binding region in the N-terminal portion of the enzyme with that known for SAL1H from Pseudomonas putida. Immunochemical properties, determined while conducting serological experiments, showed SAL5H and MHB6H from strain S1 to be immunologically different from PHB3H from strain S1, while SAL5H and MHB6H to apparently share partial antigenic determinants.
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Suemori, A., Nakajima, K., Kurane, R. et al. Physicochemical and immunochemical characterization of salicylate 5-hydroxylase, m-hydroxybenzoate 6-hydroxylase and p-hydroxybenzoate 3-hydroxylase from Rhodococcus erythropolis . Biotechnol Lett 17, 1063–1068 (1995). https://doi.org/10.1007/BF00143101
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DOI: https://doi.org/10.1007/BF00143101