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@ARTICLE{Tokin:473443,
author = {Tokin, Radina and Frandsen, Kristian E. H. and Ipsen, Johan
Ørskov and Lo Leggio, Leila and Poojary, Mahesha M. and
Berrin, Jean-Guy and Grisel, Sacha and Brander, Søren and
Jensen, Poul Erik and Johansen, Katja Salomon},
title = {{I}nhibition of lytic polysaccharide monooxygenase by
natural plant extracts},
journal = {The new phytologist},
volume = {232},
number = {3},
issn = {0028-646X},
address = {Oxford [u.a.]},
publisher = {Wiley-Blackwell},
reportid = {PUBDB-2022-00063},
pages = {1337 - 1349},
year = {2021},
note = {Waiting for fulltext},
abstract = {Lytic polysaccharide monooxygenases (LPMOs) are monocopper
enzymes of industrial and biological importance. In
particular, LPMOs play important roles in fungal lifestyle.
No inhibitors of LPMOs have yet been reported. In this
study, a diverse library of 100 plant extracts was screened
for LPMO activity-modulating effects. By employing protein
crystallography and LC–MS, we successfully identified a
natural LPMO inhibitor. Extract screening revealed a
significant LPMO inhibition by methanolic extract of
Cinnamomum cassia (cinnamon), which inhibited $Ls$AA9A LPMO
from Lentinus similis in a concentration-dependent manner.
With a notable exception, other microbial LPMOs from
families AA9 and AA10 were also inhibited by this cinnamon
extract. The polyphenol cinnamtannin B1 was identified as
the inhibitory component by crystallography. Cinnamtannin B1
was bound to the surface of $Ls$AA9A at two distinct binding
sites: one close to the active site and another at a pocket
on the opposite side of the protein. Independent
characterization of cinnamon extract by LC–MS and
subsequent activity measurements confirmed that the compound
inhibiting $Ls$AA9A was cinnamtannin B1. The results of this
study show that specific natural LPMO inhibitors of plant
origin exist in nature, providing the opportunity for future
exploitation of such compounds within various
biotechnological contexts.},
cin = {DOOR ; HAS-User},
ddc = {580},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / BIOSTRUCT-X -
Transnational access and enhancement of integrated
Biological Structure determination at synchrotron X-ray
radiation facilities (283570)},
pid = {G:(DE-HGF)POF4-6G3 / G:(EU-Grant)283570},
experiment = {EXP:(DE-H253)P-P11-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34389999},
UT = {WOS:000691795100001},
doi = {10.1111/nph.17676},
url = {https://bib-pubdb1.desy.de/record/473443},
}