% 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{Bott:1010606,
author = {Bott, Michael and Sundermeyer, Lea and Folkerts, Jan-Gerrit
and Lückel, Benita and Mack, Christina and Baumgart, Meike},
title = {{C}ellular localization of the hybrid
pyruvate/2-oxoglutarate dehydrogenase complex in the
actinobacterium {C}orynebacterium glutamicum},
journal = {Microbiology spectrum},
volume = {11},
number = {5},
issn = {2165-0497},
address = {Birmingham, Ala.},
publisher = {ASM},
reportid = {FZJ-2023-03125},
pages = {1-17},
year = {2023},
abstract = {For many bacterial proteins, specific localizations within
the cell have been demonstrated, but enzymes involved in
central metabolism are usually considered to be homogenously
distributed within the cytoplasm. Here, we provide an
example for a spatially defined localization of a unique
enzyme complex found in actinobacteria, the hybrid
pyruvate/2-oxoglutarate dehydrogenase complex (PDH-ODH). In
non-actinobacterial cells, PDH and ODH form separate
multienzyme complexes of megadalton size composed of three
different subunits, E1, E2, and E3. The actinobacterial
PDH-ODH complex is composed of four subunits, AceE (E1p),
AceF (E2p), Lpd (E3), and OdhA (E1oE2o). Using fluorescence
microscopy, we observed that in Corynebacterium glutamicum,
all four subunits are co-localized in distinct spots at the
cell poles, and in larger cells, additional spots are
present at mid-cell. These results further confirm the
existence of the hybrid complex. The unphosporylated OdhI
protein, which binds to OdhA and inhibits ODH activity, was
co-localized with OdhA at the poles, whereas phosphorylated
OdhI, which does not bind OdhA, was distributed in the
entire cytoplasm. Isocitrate dehydrogenase and glutamate
dehydrogenase, both metabolically linked to ODH, were evenly
distributed in the cytoplasm. Based on the available
structural data for individual PDH-ODH subunits, a novel
supramolecular architecture of the hybrid complex differing
from classical PDH and ODH complexes has to be postulated.
Our results suggest that localization at the poles or at
mid-cell is most likely caused by nucleoid exclusion and
results in a spatially organized metabolism in
actinobacteria, with consequences yet to be studied.},
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 = {37754766},
UT = {WOS:001074023400001},
doi = {10.1128/spectrum.02668-23},
url = {https://juser.fz-juelich.de/record/1010606},
}