Solid-phase peptide synthesis of analogues of the N-terminus A-ring fragment of the lantibiotic nisin: Replacements for the dehydroalanine (Dha) residue at position 5 and the first incorporation of a thioamide residue
作者:Kim Manzor、Keith ó Proinsias、Fintan Kelleher
DOI:10.1016/j.tetlet.2017.06.052
日期:2017.7
A number of A-ring analogues of the lantibiotic nisin, containing replacements for the Dha residue at position 5, have been successfully prepared by solid-phase peptide synthesis. The Dha replacements include glycine, alanine, phenylalanine, serine and 1-aminocyclopropyl carboxylic acid (ACCa). The incorporation of a thioamide-isoleucine residue at position 4 is also described and represents the first
Solid-Supported Synthesis and Biological Evaluation of the Lantibiotic Peptide Bis(desmethyl) Lacticin 3147 A2
作者:Vijaya R. Pattabiraman、Shaun M. K. McKinnie、John C. Vederas
DOI:10.1002/anie.200802919
日期:2008.11.24
Chemical Synthesis and Biological Activity of Analogues of the Lantibiotic Epilancin 15X
作者:Patrick J. Knerr、Wilfred A. van der Donk
DOI:10.1021/ja302435y
日期:2012.5.9
Lantibiotics are a large family of antibacterial peptide natural products containing multiple post-translational modifications, including the thioether structures lanthionine and methyllanthionine. Efforts to probe structure activity relationships and engineer improved pharmacological properties have driven the development of new methods to produce non-natural analogues of these compounds. In this study, solid-supported chemical synthesis was used to produce analogues of the potent lantibiotic epilancin 15X, in order to assess the importance of several N-terminal post-translational modifications for biological activity. Surprisingly, substitution of these moieties, including the unusual N-terminal D-lactyl moiety, resulted in relatively small changes in the antimicrobial activity and pore-forming ability of the peptides.
Synthesis and Bioactivity of Diastereomers of the Virulence Lanthipeptide Cytolysin
作者:Subha Mukherjee、Liujie Huo、Gabrielle N. Thibodeaux、Wilfred A. van der Donk
DOI:10.1021/acs.orglett.6b03246
日期:2016.12.2
Cytolysin, a two-component lanthipeptide comprising cytolysin S (CylL(s)") and cytolysin L (CyILL"), is the only family member to exhibit lytic activity against mammalian cells in addition to synergistic antimicrobial activity. A subset of the thioether cross-links of CylLs" and CylL(L)," have LL stereochemistry instead of the canonical DL stereochemistry in all previously characterized lanthipeptides. The synthesis of a CylLs" variant with DL stereochemistry is reported. Its antimicrobial activity was found to be decreased, but not its lytic activity against red blood cells. Hence, the unusual LL stereochemistry is not responsible for the lytic activity.