Download MendeleyIdentification and three-dimensional structure of carnobacteriocin XY, a class IIb bacteriocin produced by Carnobacteria.
Acedo, J.Z., Towle, K.M., Lohans, C.T., Miskolzie, M., McKay, R.T., Doerksen, T.A., Vederas, J.C., Martin-Visscher, L.A.(2017) FEBS Lett 591: 1349-1359
- PubMed: 28391617
- DOI: https://doi.org/10.1002/1873-3468.12648
- Primary Citation of Related Structures:
5UJQ, 5UJR - PubMed Abstract:
In this study, we report that CbnX (33 residues) and CbnY (29 residues) comprise a class IIb (two-component) bacteriocin in Carnobacteria. Individually, CbnX and CbnY are inactive, but together act synergistically to exert a narrow spectrum of activity. The structures of CbnX and CbnY in structure-inducing conditions were determined and strongly resemble other class IIb bacteriocins (i.e., LcnG, PlnEF, PlnJK). CbnX has an extended, amphipathic α-helix and a flexible C terminus. CbnY has two α-helices (one hydrophobic, one amphipathic) connected by a short loop and a cationic C terminus. CbnX and CbnY do not appear to interact directly and likely require a membrane-bound receptor to facilitate formation of the bacteriocin complex. This is the first class IIb bacteriocin reported for Carnobacteria.
Organizational Affiliation:
Department of Chemistry, University of Alberta, Edmonton, AB, Canada.
