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@ARTICLE{Pashou:1006811,
author = {Pashou, Efthimia and Reich, Sebastian J. and Reiter,
Alexander and Weixler, Dominik and Eikmanns, Bernhard J. and
Oldiges, Marco and Riedel, Christian U. and Goldbeck,
Oliver},
title = {{I}dentification and {C}haracterization of {C}orynaridin, a
{N}ovel {L}inaridin from {C}orynebacterium lactis},
journal = {Microbiology spectrum},
volume = {11},
number = {1},
issn = {2165-0497},
address = {Birmingham, Ala.},
publisher = {ASM},
reportid = {FZJ-2023-01864},
pages = {e01756-22},
year = {2023},
abstract = {Genome analysis of Corynebacterium lactis revealed a
bacteriocin gene cluster encoding a putative bacteriocin of
the linaridin family of ribosomally synthesized and
posttranslationally modified peptides (RiPPs). The locus
harbors typical linaridin modification enzymes but lacks
genes for a decarboxylase and methyltransferase, which is
unusual for type B linaridins. Supernatants of
Corynebacterium lactis RW3-42 showed antimicrobial activity
against Corynebacterium glutamicum. Deletion of the
precursor gene crdA clearly linked the antimicrobial
activity of the producer strain to the identified gene
cluster. Following purification, we observed potent activity
of the peptide against Actinobacteria, mainly other members
of the genus Corynebacterium, including the pathogenic
species Corynebacterium striatum and Corynebacterium
amycolatum. Also, low activity against some Firmicutes was
observed, but there was no activity against Gram-negative
species. The peptide is resilient towards heat but sensitive
to proteolytic degradation by trypsin and proteinase K.
Analysis by mass spectrometry indicates that corynaridin is
processed by cleaving off the leader sequence at a conserved
motif and posttranslationally modified by dehydration of all
threonine and serin residues, resulting in a monoisotopic
mass of 3,961.19 Da. Notably, time-kill kinetics and
experiments using live biosensors to monitor membrane
integrity suggest bactericidal activity that does not
involve formation of pores in the cytoplasmic membrane. As
Corynebacterium species are ubiquitous in nature and include
important commensals and pathogens of mammalian organisms,
secretion of bacteriocins by species of this genus could be
a hitherto neglected trait with high relevance for intra-
and interspecies competition and infection.},
cin = {IBG-1},
ddc = {570},
cid = {I:(DE-Juel1)IBG-1-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)16},
pubmed = {36541778},
UT = {WOS:000899411900001},
doi = {10.1128/spectrum.01756-22},
url = {https://juser.fz-juelich.de/record/1006811},
}