Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(26)
Published: March 31, 2023
Abstract
Terpenoids
are
built
from
isoprene
building
blocks
and
have
numerous
biological
functions.
Selective
late‐stage
modification
of
their
carbon
scaffold
has
the
potential
to
optimize
or
transform
activities.
However,
synthesis
terpenoids
with
a
non‐natural
is
often
challenging
endeavor
because
complexity
these
molecules.
Herein
we
report
identification
engineering
(
S
)‐adenosyl‐
l
‐methionine‐dependent
sterol
methyltransferases
for
selective
C
‐methylation
linear
terpenoids.
The
engineered
enzyme
catalyzes
methylation
unactivated
alkenes
in
mono‐,
sesqui‐
diterpenoids
produce
11
,
16
21
derivatives.
Preparative
conversion
product
isolation
reveals
that
this
biocatalyst
performs
−
bond
formation
high
chemo‐
regioselectivity.
alkene
most
likely
proceeds
via
carbocation
intermediate
regioselective
deprotonation.
This
method
opens
new
avenues
modifying
general
particular.
Chemical Society Reviews,
Journal Year:
2021,
Volume and Issue:
50(14), P. 8003 - 8049
Published: Jan. 1, 2021
Technological
developments
enable
the
discovery
of
novel
enzymes,
advancement
enzyme
cascade
designs
and
pathway
engineering,
moving
biocatalysis
into
an
era
technology
integration,
intelligent
manufacturing
enzymatic
total
synthesis.
Angewandte Chemie International Edition,
Journal Year:
2021,
Volume and Issue:
60(31), P. 16824 - 16855
Published: Jan. 16, 2021
Enzyme
catalysis
is
gaining
increasing
importance
in
synthetic
chemistry.
Nowadays,
the
growing
number
of
biocatalysts
accessible
by
means
bioinformatics
and
enzyme
engineering
opens
up
an
immense
variety
selective
reactions.
Biocatalysis
especially
provides
excellent
opportunities
for
late-stage
modification
often
superior
to
conventional
de
novo
synthesis.
Enzymes
have
proven
be
useful
direct
introduction
functional
groups
into
complex
scaffolds,
as
well
rapid
diversification
compound
libraries.
Particularly
important
highly
topical
are
enzyme-catalysed
oxyfunctionalisations,
halogenations,
methylations,
reductions,
amide
bond
formations
due
high
prevalence
these
motifs
pharmaceuticals.
This
Review
gives
overview
strengths
limitations
enzymatic
modifications
using
native
engineered
enzymes
synthesis
while
focusing
on
examples
drug
development.
ChemBioChem,
Journal Year:
2022,
Volume and Issue:
23(18)
Published: June 13, 2022
In
this
review
the
current
state-of-the-art
of
S-adenosylmethionine
(SAM)-dependent
methyltransferases
and
SAM
are
evaluated.
Their
structural
classification
diversity
is
introduced
key
mechanistic
aspects
presented
which
then
detailed
further.
Then,
catalytic
as
a
target
for
drugs,
approaches
to
utilise
cofactor
in
synthesis
with
different
supply
regeneration
The
use
analogues
also
described.
Finally
O-,
N-,
C-
S-MTs,
their
synthetic
applications
potential
compound
diversification
given.
Frontiers in Endocrinology,
Journal Year:
2024,
Volume and Issue:
15
Published: April 17, 2024
Mitochondria
plays
an
essential
role
in
regulating
cellular
metabolic
homeostasis,
proliferation/differentiation,
and
cell
death.
Mitochondrial
dysfunction
is
implicated
many
age-related
pathologies.
Evidence
supports
that
the
of
mitochondria
decline
mitochondrial
DNA
copy
number
negatively
affect
ovarian
aging.
However,
mechanism
aging
still
unclear.
Treatment
methods,
including
antioxidant
applications,
transplantation,
emerging
biomaterials,
advanced
technologies,
are
being
used
to
improve
function
restore
oocyte
quality.
This
article
reviews
key
evidence
research
updates
on
damage
pathogenesis
aging,
emphasizing
may
accelerate
lead
senescence
as
well
exploring
potential
methods
for
using
mechanisms
slow
down
Angewandte Chemie International Edition,
Journal Year:
2020,
Volume and Issue:
60(3), P. 1524 - 1527
Published: Oct. 27, 2020
Abstract
Biocatalytic
alkylations
are
important
reactions
to
obtain
chemo‐,
regio‐
and
stereoselectively
alkylated
compounds.
This
can
be
achieved
using
S‐adenosyl‐
l
‐methionine
(SAM)‐dependent
methyltransferases
SAM
analogs.
It
was
recently
shown
that
a
halide
methyltransferase
(HMT)
from
Chloracidobacterium
thermophilum
synthesize
SAH
methyl
iodide.
We
developed
an
iodide‐based
assay
for
the
directed
evolution
of
HMT
Arabidopsis
thaliana
used
it
identify
V140T
variant
also
accept
ethyl‐,
propyl‐,
allyl
iodide
produce
corresponding
analogs
(90,
50,
70
%
conversion
15
mg
SAH).
The
AtHMT
in
one‐pot
cascades
with
O
‐methyltransferases
(IeOMT
or
COMT)
achieve
regioselective
ethylation
luteolin
allylation
3,4‐dihydroxybenzaldehyde.
While
cascade
propylation
3,4‐dihydroxybenzaldehyde
gave
low
conversion,
propyl‐SAH
intermediate
could
confirmed
by
NMR
spectroscopy.
Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(16), P. 10381 - 10431
Published: July 31, 2023
The
ability
to
site-selectively
modify
equivalent
functional
groups
in
a
molecule
has
the
potential
streamline
syntheses
and
increase
product
yields
by
lowering
step
counts.
Enzymes
catalyze
site-selective
transformations
throughout
primary
secondary
metabolism,
but
leveraging
this
capability
for
non-native
substrates
reactions
requires
detailed
understanding
of
limitations
enzyme
catalysis
how
these
bounds
can
be
extended
protein
engineering.
In
review,
we
discuss
representative
examples
involving
group
manipulation
C-H
bond
functionalization.
We
include
illustrative
native
catalysis,
our
focus
is
on
cases
often
using
engineered
enzymes.
then
use
enzymes
chemoenzymatic
target-oriented
synthesis
conclude
with
survey
tools
techniques
that
could
expand
scope
catalysis.
Angewandte Chemie International Edition,
Journal Year:
2021,
Volume and Issue:
60(52), P. 27178 - 27183
Published: Oct. 1, 2021
Strategic
replacement
of
protons
with
fluorine
atoms
or
functional
groups
fluorine-containing
fragments
has
proven
a
powerful
strategy
to
optimize
the
activity
therapeutic
compounds.
For
this
reason,
synthetic
chemistry
organofluorides
been
subject
intense
development
and
innovation
for
many
years.
By
comparison,
literature
on
biocatalysis
still
makes
slim
chapter.
Herein
we
introduce
S-adenosylmethionine
(SAM)
dependent
methyltransferases
as
new
tool
production
fluorinated
We
demonstrate
ability
halide
form
SAM
(S-adenosyl-S-(fluoromethyl)-L-homocysteine)
from
S-adenosylhomocysteine
fluoromethyliodide.
Fluorinated
(F-SAM)
is
too
unstable
isolation,
but
accepted
substrate
by
C-,
N-
O-specific
enzyme-catalyzed
fluoromethylation
small
molecules.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(41)
Published: Aug. 22, 2022
Late-stage
methylation
is
a
key
technology
in
the
development
of
pharmaceutical
compounds.
Methyltransferase
biocatalysis
may
provide
powerful
options
to
insert
methyl
groups
into
complex
molecules
with
high
regio-
and
chemoselectivity.
The
challenge
large-scale
application
methyltransferases
their
dependence
on
S-adenosylmethionine
(SAM)
as
stoichiometric,
thus
exceedingly
expensive
co-substrate.
As
solution
this
problem,
we
others
have
explored
use
halides
reagents
for
situ
regeneration
SAM.
However,
need
handle
volatile
electrophiles,
such
iodide
(MeI),
also
hamper
applications
at
scale.
more
practical
solution,
now
developed
an
enzyme-catalyzed
process
SAM
toluene
sulfonate.
Herein,
describe
enzymes
from
thiopurine
methyltransferase
family
that
accept
sulfate-
sulfonate-based
donors
convert
S-adenosylhomocysteine
efficiencies
rival
MeI-based
reactions.
ChemCatChem,
Journal Year:
2023,
Volume and Issue:
15(22)
Published: Aug. 21, 2023
Abstract
Directed
evolution
of
the
O
‐methyltransferase
ZgOMT
from
Zooshikella
ganghwensis
focusing
on
active
site
residues
resulted
in
highly
regioselective
biocatalysts
(regioisomeric
ratios
up
to
99
:
1)
for
preparation
taste
hesperetin
dihydrochalcone
and
related
compounds.
These
newly
constructed
enzyme
variants
provide
an
attractive
synthesis
route
para
‐methylation
catechol
scaffolds,
which
is
challenging
perform
with
high
regioselectivity
utilizing
wild‐type
‐methyltransferases.