By Prof. Dr. Margaret A. Riley, Dr. Milind A. Chavan (auth.), Prof. Dr. Margaret A. Riley, Dr. Milind A. Chavan (eds.)
Microbes produce a rare array of protection structures. those contain bacteriocins, a category of antimicrobial molecules with slim killing spectra, produced by way of micro organism. The e-book describes the variety and ecological function of bacteriocins of Gram-positive and Gram-negative micro organism, offering a brand new class scheme for the previous and a state of the art examine the function of bacteriocins in bacterial verbal exchange. It discusses the molecular evolution of colicins and colicin-like bacteriocins, and offers a modern evaluate of archaeocins, bacteriocin-like antimicrobials produced by way of archaebacteria. in addition, a variety of modeling (in silico) experiences elucidate the position of bacteriocins in microbial neighborhood dynamics and health, delving into rock-paper-scissors pageant and the counter-intuitive survival of the weakest. The publication makes compelling interpreting for a multi-faceted medical viewers, together with these operating within the fields of biodiversity and biotechnology, particularly within the human and animal future health domain.
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Extra info for Bacteriocins: Ecology and Evolution
2005). These domains have evolved in CLBs so as to be more adept in exploiting the receptors and translocation mechanisms of their own species. This has resulted in the evolution of colicins and CLBs which kill very closely related bacteria. It appears that within their ecological niches, bacteria selectively develop toxins to control closely related populations which have similar environmental requirements, rather than addressing competition from different genera. In other words, bacterial strains appear to be more threatened by siblings than by cousins.
Chavan and Margaret A. Riley a. DNase killing domains b. DNase immunity proteins Fig. 5 Amino acid alignments of killing domains and immunity proteins of colicins and colicin-like bacteriocins. Killing domains of DNase (a), 16S rRNase (c), and pore-forming (e) domains and their respective immunity proteins (b, d, f) are shown. Amino acid residues conserved in the majority of sequences are highlighted in grey whereas those conserved in all sequences are shown in black Molecular Evolution of Bacteriocins in Gram-Negative Bacteria 31 c.
Thus, altering the domain structure of the protein, as seen for pyocins which have switched the receptor recognition and translocation domains relative to the order found in colicins, has not limited the influence of diversifying recombination. 5 Evolution of Colicin Killing Domains The killing domains are the function modules of colicins which catalyze deleterious changes in the sensitive cell, leading to death. Various killing mechanisms are employed by colicins, as described in the sections above.
Bacteriocins: Ecology and Evolution by Prof. Dr. Margaret A. Riley, Dr. Milind A. Chavan (auth.), Prof. Dr. Margaret A. Riley, Dr. Milind A. Chavan (eds.)