Download e-book for iPad: Advances in Biochemical Engineering Biotechnology New by M. Berovic, B. Contreras, M. Dueser, N. Krieger, M. Menge,

By M. Berovic, B. Contreras, M. Dueser, N. Krieger, M. Menge, D.A. Mitchel, J. Mukherjee, K.S.M.S. Raghavarao, E. Sablon, K. Schuegerl, P. Todd, E. Vandamme

A set of papers from scientists all over the international discussing the most recent issues in engineering biotechnology, and comparable chemistry, desktop technology, and genetics functions.

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MesC, a 137-amino acid protein upstream mesD in the mesentericin Y105 gene cluster shows no homology with known protein [124]. 4 The Lactobacillus Bacteriocins Sakacin A and Plantaricin A Axelsson et al. [147] (1993) shotgun cloned the plasmid fraction of L. sake Lb706 directly in a sakacin A non-producing and sensitive variant L. sake Lb706-B. One of the two clones, necessary for the restoration of immunity encoded a 430-amino acid residue protein designated as SakB [147]. Hybridization and sequence analysis revealed that sakB complemented a mutated copy of sakB present in L.

These data indicate that proteolytic cleavage is a process that occurs at the extracellular face of the cytoplasmic membrane following secretion [101]. The counterparts of NisP in the epidermin (EpiP) and cytolysin (CylP) operons contain a signal sequence but lack a membrane-spanning domain, suggesting that they are attached in another way or are not membrane associated [88, 122, 190]. PepP, LasP and ElkP involved in respectively Pep5, lactocin S and epilancin K7 proteolytic processing all lack a signal sequence, and may therefore function intracellularly, which is in agreement with their N-terminal modification [40, 186, 187].

Despite this heterogeneity, all class II bacteriocins display a very conserved N-terminal leader peptide and a characteristic double-glycine-type (Gly –2 Gly –1 Xaa) proteolytic processing site [21]. The conserved mechanism of secretion and processing suggested by these findings is reflected in the organization of the operon structures encoding these bacteriocins (Fig. 4). The genetic determinants involved in the production of several class II bacteriocins have been genetically studied in detail (Fig.

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Advances in Biochemical Engineering Biotechnology New Products and New Areas of Bioprocess Engineering by M. Berovic, B. Contreras, M. Dueser, N. Krieger, M. Menge, D.A. Mitchel, J. Mukherjee, K.S.M.S. Raghavarao, E. Sablon, K. Schuegerl, P. Todd, E. Vandamme


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