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@ARTICLE{Hollenstein:300896,
author = {Hollenstein, Kaspar and Comellas-Bigler, Mireia and Bevers,
Loes E. and Feiters, Martin C. and Meyer-Klaucke, Wolfram
and Hagedoorn, Peter-Leon and Locher, Kaspar P.},
title = {{D}istorted octahedral coordination of tungstate in a
subfamily of specific binding proteins},
journal = {Journal of biological inorganic chemistry},
volume = {14},
number = {5},
issn = {1432-1327},
address = {Berlin},
publisher = {Springer},
reportid = {PUBDB-2016-02463},
pages = {663 - 672},
year = {2009},
note = {(c) SBIC},
abstract = {Bacteria and archaea import molybdenum andtungsten from the
environment in the form of theoxyanions molybdate (MoO42-)
and tungstate (WO42-).These substrates are captured by an
external, high-affinitybinding protein, and delivered to ATP
binding cassettetransporters, which move them across the
cell membrane.We have recently reported a crystal structure
of themolybdate/tungstate binding protein ModA/WtpA
fromArchaeoglobus fulgidus, which revealed an
octahedrallycoordinated central metal atom. By contrast, the
previouslydetermined structures of three bacterial homologs
showedtetracoordinate molybdenum and tungsten atoms in
theirbinding pockets. Until then, coordination numbers
abovefour had only been found for molybdenum/tungsten
inmetalloenzymes where these metal atoms are part of
thecatalytic cofactors and coordinated by mostly
non-oxygenligands. We now report a high-resolution structure
ofA. fulgidus ModA/WtpA, as well as crystal structures
offour additional homologs, all bound to tungstate.
Thesecrystal structures match X-ray absorption
spectroscopymeasurements from soluble, tungstate-bound
protein, andreveal the details of the distorted octahedral
coordination.Our results demonstrate that the distorted
octahedralgeometry is not an exclusive feature of the A.
fulgidusprotein, and suggest distinct binding modes of the
bindingproteins from archaea and bacteria.},
cin = {EMBL / EMBL-User},
ddc = {540},
cid = {I:(DE-H253)EMBL-20120731 / I:(DE-H253)EMBL-User-20120814},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
experiment = {EXP:(DE-H253)D-D2-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:19234723},
UT = {WOS:000266924400003},
doi = {10.1007/s00775-009-0479-7},
url = {https://bib-pubdb1.desy.de/record/300896},
}