Betaine biosynthesis in a heterologous expression system based on the B12 producer Pseudomonas denitrificansYuri Shkryl, Anton Degtyarenko, Valeria Grigorchuk, Larisa Balabanova and Lyudmila TekutyevaE3S Web of Conf., 222 (2020) 02047DOI: https://doi.org/10.1051/e3sconf/202022202047