Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(30), С. 16383 - 16390
Опубликована: Июль 18, 2023
Proteins
play
important
roles
in
the
therapeutic,
medical
diagnostic,
and
chemical
catalysis
industries.
However,
their
potential
is
often
limited
by
fragile
dynamic
nature
outside
cellular
environments.
The
encapsulation
of
proteins
solid
materials
has
been
widely
pursued
as
a
route
to
enhance
stability
ease
handling.
Nevertheless,
experimental
investigation
protein
interactions
with
rationally
designed
synthetic
hosts
still
represents
an
area
need
improvement.
In
this
work,
we
leveraged
tunability
crystallinity
metal-organic
frameworks
(MOFs)
developed
series
crystallographically
defined
varying
properties.
Through
systematic
studies,
identified
dominating
mechanisms
for
host
material
well-tailored
properties
effectively
encapsulate
ubiquitin.
Specifically,
our
mesoporous
hosts,
found
that
ubiquitin
thermodynamically
favored.
A
more
hydrophilic
environment
favorable
electrostatic
induces
enthalpically
favored
ubiquitin-MOF
interactions,
higher
pH
condition
reduces
intraparticle
diffusion
barrier,
both
leading
loading.
Our
findings
provide
fundamental
understanding
host-guest
between
matrices
offer
new
insights
guide
design
future
achieve
optimal
MOF
modification
technique
used
work
also
demonstrates
facile
method
develop
easily
customizable
encapsulating
different
surface
Chemical Society Reviews,
Год журнала:
2021,
Номер
50(7), С. 4541 - 4563
Опубликована: Янв. 1, 2021
Different
chemical,
physical,
and
biomarker
triggers
to
unlock
the
metal–organic
framework
nanoparticles
release
drugs
loaded
in
particles
will
be
addressed.
Journal of the American Chemical Society,
Год журнала:
2021,
Номер
143(37), С. 15378 - 15390
Опубликована: Сен. 3, 2021
The
artificial
engineering
of
an
enzyme's
structural
conformation
to
enhance
its
activity
is
highly
desired
and
challenging.
Anisotropic
reticular
chemistry,
best
illustrated
in
the
case
multivariate
metal–organic
frameworks
(MTV-MOFs),
provides
a
platform
modify
MOF's
pore
inner-surface
with
functionality
variations
on
optimize
interior
environment
specifically
targeted
property.
In
this
study,
we
altered
ratio
linkers
zeolitic
imidazolate
(ZIFs),
subclass
MOFs,
MTV
approach
demonstrate
strategy
that
allows
us
encapsulated
enzyme
by
continuously
tuning
framework–enzyme
interaction
through
hydrophilicity
change
pores'
microenvironment.
To
systematically
study
interaction,
developed
component-adjustment-ternary
plot
(CAT)
method
optimal
BCL
revealed
nonlinear
correlation,
first
incremental
then
decremental,
between
hydrophilic
linker'
ratios
MTV-ZIF-8.
These
findings
indicated
there
spatial
arrangement
functional
groups
along
three-dimensional
space
across
ZIF-8
crystal
unique
sequence
could
structure
closed-lid
open-lid
conformations.
changes
were
confirmed
FTIR
spectra
fluorescence
studies.
optimized
BCL@ZIF-8
not
only
thermally
chemically
more
stable
than
free
solution,
but
also
doubles
catalytic
reactivity
kinetic
resolution
reaction
99%
ee
products.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Авг. 16, 2022
Abstract
Nature
programs
the
structural
folding
of
an
enzyme
that
allows
its
on-demand
biofunctionality;
however,
it
is
still
a
long-standing
challenge
to
manually
modulate
enzyme’s
conformation.
Here,
we
design
exogenous
hydrogen-bonded
organic
framework
conformation
cytochrome
c,
and
hence
allow
non-native
bioactivity
for
enzyme.
The
rigid
framework,
with
net-arranged
carboxylate
inner
cage,
in
situ
installed
onto
native
c.
resultant
nano-biointerface
changes
previously
not
achieved
catalase-like
species
within
reported
c-porous
systems.
In
addition,
preserved
can
stabilize
encapsulated
channel-like
pores
also
guarantee
free
entrance
catalytic
substrates.
This
work
describes
conceptual
nanotechnology
manoeuvring
flexible
conformations
enzyme,
highlights
advantages
artificial
scaffolds
activity.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(39)
Опубликована: Авг. 2, 2022
Abstract
Enzyme
immobilization
is
essential
to
the
commercial
viability
of
various
critical
large‐scale
biocatalytic
processes.
However,
challenges
remain
for
systems,
such
as
difficulties
in
loading
large
enzymes,
enzyme
leaching,
and
limitations
fabrication.
Herein,
we
describe
a
green
scalable
strategy
prepare
high‐performance
biocatalysts
through
situ
assembly
enzymes
with
covalent
organic
frameworks
(COFs)
under
ambient
conditions
(aqueous
solution
room
temperature).
The
obtained
have
exceptional
reusability
stability
serve
efficient
important
industrial
reactions
that
cannot
be
efficiently
catalyzed
by
free
or
traditional
systems.
Notably,
this
versatile
platform
applicable
COFs
enzymes.
an
aqueous
occurred
within
short
timeframe
(ca.
10–30
min)
could
scaled
up
readily
2.3
g
per
reaction).
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(21)
Опубликована: Март 10, 2022
Controllable
regulations
on
the
enzyme
conformation
to
optimize
catalytic
performance
are
highly
desired
for
immobilized
biocatalysts
yet
remain
challenging.
Covalent
organic
frameworks
(COFs)
possess
confined
channels
with
finely
tunable
pore
environment,
offering
a
promising
platform
encapsulation.
Herein,
we
covalently
cytochrome
c
(Cyt
c)
in
size-matched
of
COFs
different
contents
anchoring
site,
and
significant
enhancement
stability
activity
(≈600
%
relative
compared
free
enzyme)
can
be
realized
by
optimizing
covalent
interactions.
Structural
analyses
Cyt
suggest
that
bonding
could
induce
conformational
perturbation
resulting
more
accessible
active
sites.
The
effectiveness
interaction
modulation
together
tailorable
offers
promise
develop
high-performance
biocatalysts.
Abstract
Metal–organic
frameworks
(MOFs)
represent
a
relatively
new
family
of
materials
that
attract
lots
attention
thanks
to
their
unique
features
such
as
hierarchical
porosity,
active
metal
centers,
versatility
linkers/metal
nodes,
and
large
surface
area.
Among
the
extended
list
MOFs,
Zr‐based‐MOFs
demonstrate
comparably
superior
chemical
thermal
stabilities,
making
them
ideal
candidates
for
energy
environmental
applications.
As
Zr‐MOF,
NU‐1000
is
first
synthesized
at
Northwestern
University.
A
comprehensive
review
various
approaches
synthesis
MOFs
obtaining
properties
(e.g.,
diverse
morphologies,
area,
particular
pore
size
distribution)
applications
in
catalysis
(electro‐,
photo‐catalysis),
CO
2
reduction,
batteries,
hydrogen
storage,
gas
storage/separation,
other
fields
are
presented.
The
further
outlines
current
challenges
development
derivatives
practical
applications,
revealing
areas
future
investigation.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(24), С. 13469 - 13475
Опубликована: Июнь 7, 2023
Immobilization
of
fragile
enzymes
in
crystalline
porous
materials
offers
new
opportunities
to
expand
the
applications
biocatalysts.
However,
limited
by
pore
size
and/or
harsh
synthesis
conditions
hosts,
often
suffer
from
dimension
limitation
or
denaturation
during
immobilization
process.
Taking
advantage
dynamic
covalent
chemistry
feature
organic
frameworks
(COFs),
herein,
we
report
a
preprotection
strategy
encapsulate
COFs
self-repairing
and
crystallization
Enzymes
were
first
loaded
low-crystalline
polymer
networks
with
mesopores
formed
at
initial
growth
stage,
which
could
offer
effective
protection
for
reaction
conditions,
subsequently
encapsulation
proceeded
disordered
into
framework.
Impressively,
biological
activity
can
be
well-maintained
after
encapsulation,
obtained
enzyme@COFs
also
show
superior
stability.
Furthermore,
circumvents
enzymes,
its
versatility
was
verified
different
sizes
surface
charges,
as
well
two-enzyme
cascade
system.
This
study
universal
design
idea
robust
supports
holds
promise
developing
high-performance
immobilized
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(23)
Опубликована: Апрель 6, 2023
Abstract
Selecting
a
suitable
support
material
for
enzyme
immobilization
with
excellent
biocatalytic
activity
and
stability
is
critical
aspect
in
the
development
of
functional
biosystems.
The
highly
stable
metal‐free
properties
covalent‐organic
frameworks
(COFs)
make
them
ideal
supports
immobilization.
Herein,
we
constructed
three
kinds
COFs
via
biofriendly
one‐pot
synthetic
strategy
at
room
temperature
aqueous
solution.
Among
developed
(COF‐LZU1,
RT‐COF‐1
ACOF‐1),
horseradish
peroxidase
(HRP)‐incorporated
COF‐LZU1
found
to
retain
highest
activity.
Structural
analysis
reveals
that
weakest
interaction
between
hydrated
COF‐LZU1,
an
easiest
accessibility
by
substrate,
as
well
optimal
conformation
together
promote
bioactivity
HRP‐COF‐LZU1.
Furthermore,
revealed
be
versatile
nanoplatform
encapsulating
multiple
enzymes.
also
offers
superior
protection
immobilized
enzymes
under
harsh
conditions
during
recycling.
comprehensive
understanding
interfacial
interactions
COF
host
guest,
substrate
diffusion,
alteration
within
matrices
represents
opportunity
design
biocatalysts
opens
broad
range
applications
these
nanosystems.