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    B. subtilis is a gram-positive bacteria used by both academia and industry as a protein production workhorse. This is due to its' excellent fermentation properties, high production titers, and capacity to secrete proteins into the extracellular medium. This protocol describes transformation of B. subtilis by natural competence. The method utilizes the natural stress-induced competence of B. subtilis to take up heterologous DNA. The protocol requires the cells to be grown for a specific amount of time in starvation media (SM). The protocol is adapted from Vojcic, L., Despotovic, D., Martinez, R., Maurer, K., & Schwaneberg, U. (2012). An efficient transformation method for Bacillus subtilis DB104. Applied Microbiology and Biotechnology, 94(2), 487–493. https://doi.org/10.1007/s00253-012-3987-2.
    Heterologous
    B. subtilis is a gram-positive bacteria used by both academia and industry as a protein production workhorse. This is due to its' their excellent fermentation properties, high production titers, and capacity to secrete proteins into the extracellular medium. This protocol describes how to express proteins in B. subtilis. The protocol is developed using KO7-S, although it might also work for other strains as well. The method is adapted from Rasmussen, M. D.; Bjoernvad, M. E.; Diers, I. Pectate Lyase Fusion for Expression and Secretion of Polypeptides. WO 00/75344, 2000 and Jensen, K.; Østergaard, P. R.; Wilting, R.; Lassen, S. F. Identification and Characterization of a Bacterial Glutamic Peptidase. BMC Biochem.2010, 11 (1), 47. https://doi.org/10.1186/1471-2091-11-47.
    Wilting