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@ARTICLE{Zuo:894686,
author = {Zuo, Ke and Marjault, Henri-Baptiste and Bren, Kara L. and
Rossetti, Giulia and Nechushtai, Rachel and Carloni, Paolo},
title = {{T}he two redox states of the human {NEET} proteins’
[2{F}e–2{S}] clusters},
journal = {Journal of biological inorganic chemistry},
volume = {26},
issn = {1432-1327},
address = {New York},
publisher = {Springer},
reportid = {FZJ-2021-03348},
pages = {763–774},
year = {2021},
abstract = {The NEET proteins constitute a unique class of [2Fe–2S]
proteins. The metal ions bind to three cysteines and one
histidine. The proteins’ clusters exist in two redox
states; the oxidized protein (containing two FeIII ions) can
transfer the cluster to apo-acceptor protein(s), while the
reduced form (containing one ferrous ion) remains bound to
the protein frame. Here, we perform in silico and in vitro
studies on human NEET proteins in both reduced and oxidized
forms. Quantum chemical calculations on all available human
NEET proteins structures suggest that reducing the cluster
weakens the Fe–NHis and Fe–SCys bonds, similar to what
is seen in other Fe–S proteins (e.g., ferredoxin and
Rieske protein). We further show that the extra electron in
the [2Fe–2S]+ clusters of one of the NEET proteins (mNT)
is localized on the His-bound iron ion, consistently with
our previous spectroscopic studies. Kinetic measurements
demonstrate that the mNT [2Fe–2S]+ is released only by an
increase in temperature. Thus, the reduced state of human
NEET proteins [2Fe–2S] cluster is kinetically inert. This
previously unrecognized kinetic inertness of the reduced
state, along with the reactivity of the oxidized state, is
unique across all [2Fe–2S] proteins. Finally, using a
coevolutionary analysis, along with molecular dynamics
simulations, we provide insight on the observed allostery
between the loop L2 and the cluster region. Specifically, we
show that W75, R76, K78, K79, F82 and G85 in the latter
region share similar allosteric characteristics in both
redox states.},
cin = {IAS-5 / INM-9 / JSC},
cid = {I:(DE-Juel1)IAS-5-20120330 / I:(DE-Juel1)INM-9-20140121 /
I:(DE-Juel1)JSC-20090406},
pnm = {5252 - Brain Dysfunction and Plasticity (POF4-525) / 5111 -
Domain-Specific Simulation $\&$ Data Life Cycle Labs (SDLs)
and Research Groups (POF4-511)},
pid = {G:(DE-HGF)POF4-5252 / G:(DE-HGF)POF4-5111},
typ = {PUB:(DE-HGF)16},
pubmed = {34453614},
UT = {WOS:000690718000002},
doi = {10.1007/s00775-021-01890-8},
url = {https://juser.fz-juelich.de/record/894686},
}