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@ARTICLE{Wang:602310,
author = {Wang, Chu and Nehls, Christian and Baabe, Dirk and
Burghaus, Olaf and Hurwitz, Robert and Gutsmann, Thomas and
Bröring, Martin and Kolbe, Michael},
title = {{F}lagellin lysine methyltransferase {F}li{B} catalyzes a
[4{F}e-4{S}] mediated methyl transfer reaction},
journal = {PLoS pathogens},
volume = {17},
number = {11},
issn = {1553-7366},
address = {Lawrence, Kan.},
publisher = {PLoS},
reportid = {PUBDB-2024-00585},
pages = {e1010052 -},
year = {2021},
abstract = {The methyltransferase FliB posttranslationally modifies
surface-exposed ɛ-N-lysine residues of flagellin, the
protomer of the flagellar filament in Salmonella enterica
(S. enterica). Flagellin methylation, reported originally in
1959, was recently shown to enhance host cell adhesion and
invasion by increasing the flagellar hydrophobicity. The
role of FliB in this process, however, remained enigmatic.
In this study, we investigated the properties and mechanisms
of FliB from S. enterica in vivo and in vitro. We show that
FliB is an S-adenosylmethionine (SAM) dependent
methyltransferase, forming a membrane associated oligomer
that modifies flagellin in the bacterial cytosol. Using
X-band electron paramagnetic resonance (EPR) spectroscopy,
zero-field 57Fe Mössbauer spectroscopy, methylation assays
and chromatography coupled mass spectrometry (MS) analysis,
we further found that FliB contains an oxygen sensitive
[4Fe-4S] cluster that is essential for the methyl transfer
reaction and might mediate a radical mechanism. Our data
indicate that the [4Fe-4S] cluster is coordinated by a
cysteine rich motif in FliB that is highly conserved among
multiple genera of the Enterobacteriaceae family.},
cin = {CSSB-HZI-MK},
ddc = {610},
cid = {I:(DE-H253)CSSB-HZI-MK-20210520},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / FUTURE T3SS - Bacterial
effector secretion: Function and Architecture of the Type 3
Secretion System (311374)},
pid = {G:(DE-HGF)POF4-6G3 / G:(EU-Grant)311374},
experiment = {EXP:(DE-H253)P-P11-20150101 / EXP:(DE-H253)P-P12-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34788341},
UT = {WOS:000750695600014},
doi = {10.1371/journal.ppat.1010052},
url = {https://bib-pubdb1.desy.de/record/602310},
}