Abstract
Purpose of work
To clone, express and characterize uroporphyrinogen III synthase/methyltransferase gene (cobA/hemD) from Lactobacillus reuteri.
Some strains of Lb. reuteri produce cobalamin (vitamin B12). Cobalamin biosynthesis relies on the sequential action of more than 25 enzymes in a complex metabolic pathway. We have cloned, expressed and characterized the gene in Lb. reuteri that codes for the S-adenosy l-methionine uroprophyrinogen III methyltransferase/synthase (CobA/HemD), a key bifunctional enzyme in the biosynthesis of cobalamin and other tetrapyrrols.
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Acknowledgments
This work was supported in part by grants from CONICET and Agencia Nacional de Promoción Científica y Tecnológica. Verónica Vannini is the recipient of a fellowship from CONICET (Argentina). We are also grateful to Dr. Lars Hederstedt for sending us E. coli SASZ31.
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Vannini, V., Rodríguez, A., Vera, J.L. et al. Cloning and heterologous expression of Lactobacillus reuteri uroporphyrinogen III synthase/methyltransferase gene (cobA/hemD): preliminary characterization. Biotechnol Lett 33, 1625–1632 (2011). https://doi.org/10.1007/s10529-011-0609-5
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DOI: https://doi.org/10.1007/s10529-011-0609-5