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@ARTICLE{Ritacco:872836,
author = {Ritacco, Ida and Spinello, Angelo and Ippoliti, Emiliano
and Magistrato, Alessandra},
title = {{P}ost-{T}ranslational {R}egulation of {CYP}450s
{M}etabolism {A}s {R}evealed by {A}ll-{A}toms {S}imulations
of the {A}romatase {E}nzyme},
journal = {Journal of chemical information and modeling},
volume = {59},
number = {6},
issn = {1549-960X},
address = {Washington, DC},
publisher = {American Chemical Society64160},
reportid = {FZJ-2020-00306},
pages = {2930 - 2940},
year = {2019},
abstract = {Phosphorylation by kinases enzymes is a widespread
regulatory mechanism able of rapidly altering the function
of target proteins. Among these are cytochrome P450s
(CYP450), a superfamily of enzymes performing the oxidation
of endogenous and exogenous substrates thanks to the
electron supply of a redox partner. In spite of its pivotal
role, the molecular mechanism by which phosphorylation
modulates CYP450s metabolism remains elusive. Here by
performing microsecond-long all-atom molecular dynamics
simulations, we disclose how phosphorylation regulates
estrogen biosynthesis, catalyzed by the Human Aromatase (HA)
enzyme. Namely, we unprecedentedly propose that HA
phosphorylation at Y361 markedly stabilizes its adduct with
the flavin mononucleotide domain of CYP450s reductase (CPR),
the redox partner of microsomal CYP450s, and a variety of
other proteins. With CPR present at physiological conditions
in a limiting ratio with respect to its multiple oxidative
partners, the enhanced stability of the CPR/HA adduct may
favor HA in the competition with the other proteins
requiring CPR’s electron supply, ultimately facilitating
the electron transfer and estrogen biosynthesis. As a
result, our work elucidates at atomic-level the
post-translational regulation of CYP450s catalysis. Given
the potential for rational clinical management of diseases
associated with steroid metabolism disorders, unraveling
this mechanism is of utmost importance, and raises the
intriguing perspective of exploiting this knowledge to
devise novel therapies.},
cin = {IAS-5 / INM-9 / JARA-HPC},
ddc = {540},
cid = {I:(DE-Juel1)IAS-5-20120330 / I:(DE-Juel1)INM-9-20140121 /
$I:(DE-82)080012_20140620$},
pnm = {574 - Theory, modelling and simulation (POF3-574) /
Post-Transcriptional regulation mechanism of Human Aromatase
investigated by molecular simulations $(jias5a_20190501)$},
pid = {G:(DE-HGF)POF3-574 / $G:(DE-Juel1)jias5a_20190501$},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31033287},
UT = {WOS:000473116500039},
doi = {10.1021/acs.jcim.9b00157},
url = {https://juser.fz-juelich.de/record/872836},
}