% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Karbelkar:614011,
author = {Karbelkar, Amruta A. and Font, Maria and Smith, T. Jarrod
and Sondermann, Holger and O’Toole, George A.},
title = {{R}econstitution of a biofilm adhesin system from a
sulfate-reducing bacterium in {P}seudomonas fluorescens},
journal = {Proceedings of the National Academy of Sciences of the
United States of America},
volume = {121},
number = {13},
issn = {0027-8424},
address = {Washington, DC},
publisher = {National Acad. of Sciences},
reportid = {PUBDB-2024-05712},
pages = {e2320410121},
year = {2024},
abstract = {Biofilms of sulfate-reducing bacterium (SRB) like
Desulfovibrio vulgaris Hildenborough (DvH) can facilitate
metal corrosion in various industrial and environmental
settings leading to substantial economic losses. Although
the mechanisms of biofilm formation by DvH are not yet well
understood, recent studies indicate the large adhesin, DvhA,
is a key determinant of biofilm formation. The dvhA gene
neighborhood resembles the biofilm-regulating Lap system of
Pseudomonas fluorescens but is curiously missing the
c-di-GMP-binding regulator LapD. Instead, DvH encodes an
evolutionarily unrelated c-di-GMP-binding protein (DVU1020)
that we hypothesized is functionally analogous to LapD. To
study this unusual Lap system and overcome experimental
limitations with the slow-growing anaerobe DvH, we
reconstituted its predicted SRB Lap system in a P.
fluorescens strain lacking its native Lap regulatory
components (ΔlapGΔlapD). Our data support the model that
DvhA is a cell surface–associated LapA-like adhesin with a
N-terminal “retention module” and that DvhA is released
from the cell surface upon cleavage by the LapG-like
protease DvhG. Further, we demonstrate DVU1020 (named here
DvhD) represents a distinct class of c-di-GMP-binding,
biofilm-regulating proteins that regulates DvhG activity in
response to intracellular levels of this second messenger.
This study provides insight into the key players responsible
for biofilm formation by DvH, thereby expanding our
understanding of Lap-like systems.},
cin = {CSSB-DESY-HS},
ddc = {500},
cid = {I:(DE-H253)CSSB-DESY-HS-20210521},
pnm = {633 - Life Sciences – Building Blocks of Life: Structure
and Function (POF4-633)},
pid = {G:(DE-HGF)POF4-633},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:38498718},
UT = {WOS:001208065700003},
doi = {10.1073/pnas.2320410121},
url = {https://bib-pubdb1.desy.de/record/614011},
}