Abstract:
:Nisin is the most prominent and applied bacteriocin that serves as a model for class I lantibiotics. The nisin leader peptide importantly determines interactions between precursor nisin and its modification enzymes NisB and NisC that mature nisin posttranslationally. NisB dehydrates serines and threonines, while NisC catalyzes the subsequent coupling of the formed dehydroamino acids to form lanthionines. Currently, little is known about how the nisin leader interacts with NisB and even less is known about its interactions with NisC. To investigate the nisin leader peptide requirements for functional interaction with the modification enzymes NisB and NisC, we systematically replaced six regions, of 2-4 amino acids each, with all-alanine regions. By performing NisB and NisC co-purification studies with these mutant leader peptides, we demonstrate that the nisin leader regions STKD(-22-19), FNLD(-18-15) and PR(-2-1) importantly contribute to the interactions of precursor nisin with both NisB and NisC, whereas the nisin leader region LVSV(-14-11) additionally contributes to the interaction of precursor nisin with NisC.
journal_name
FEBS Open Biojournal_title
FEBS open bioauthors
Khusainov R,Moll GN,Kuipers OPdoi
10.1016/j.fob.2013.05.001subject
Has Abstractpub_date
2013-05-30 00:00:00pages
237-42issn
2211-5463pii
FOB94journal_volume
3pub_type
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