Journal of Chemical Information and Modeling,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Allosteric
compounds
offer
an
alternative
mode
of
inhibition
to
orthosteric
with
opportunities
for
selectivity
and
noncompetition.
Structure-based
drug
design
(SBDD)
allosteric
introduces
complications
compared
their
counterparts;
multiple
binding
sites
interest
are
considered,
often
is
only
observed
in
particular
protein
conformations.
Blind
docking
methods
show
potential
virtual
screening
ligands,
deep
learning
methods,
such
as
DiffDock,
achieve
state-of-the-art
performance
on
protein-ligand
complex
prediction
benchmarks
traditional
Vina
Lin_F9.
To
this
aim,
we
explore
the
utility
a
data-driven
platform
called
minimum
distance
matrix
representation
(MDMR)
retrospectively
predict
recently
discovered
inhibitors
complexed
Cyclin-Dependent
Kinase
(CDK)
2.
In
contrast
other
representations,
it
uses
residue-residue
(or
residue-ligand)
feature
that
prioritizes
formation
interactions.
Analysis
highlights
variety
conformations
ligand
modes,
identify
intermediate
conformation
heuristic-based
kinase
classification
do
not
distinguish.
Next,
self-
cross-docking
assess
whether
can
both
modes
if
prospective
success
conditional
selection
receptor
conformation,
respectively.
We
find
combined
method,
DiffDock
followed
by
Lin_F9
Local
Re-Docking
(DiffDock
+
LRD),
must
be
selected
pose.
summary,
work
value
method
outlines
challenges
SBDD
compounds.
Artificial
intelligence
is
revolutionizing
protein
structure
prediction,
providing
unprecedented
opportunities
for
drug
design.
To
assess
the
potential
impact
on
ligand
discovery,
we
compared
virtual
screens
using
structures
generated
by
AlphaFold
machine
learning
method
and
traditional
homology
modeling.
More
than
16
million
compounds
were
docked
to
models
of
trace
amine-associated
receptor
1
(TAAR1),
a
G
protein-coupled
unknown
target
treating
neuropsychiatric
disorders.
Sets
30
32
highly
ranked
from
model
screens,
respectively,
experimentally
evaluated.
Of
these,
25
TAAR1
agonists
with
potencies
ranging
12
0.03
μM.
The
screen
yielded
more
twofold
higher
hit
rate
(60%)
discovered
most
potent
agonists.
A
agonist
promising
selectivity
profile
drug-like
properties
showed
physiological
antipsychotic-like
effects
in
wild-type
but
not
knockout
mice.
These
results
demonstrate
that
can
accelerate
discovery.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 14, 2025
Abstract
Large
library
docking
of
tangible
molecules
has
revealed
potent
ligands
across
many
targets.
While
make-on-demand
libraries
now
exceed
75
billion
enumerated
molecules,
their
synthetic
routes
are
dominated
by
a
few
reaction
types,
reducing
diversity
and
inevitably
leaving
interesting
bioactive-like
chemotypes
unexplored.
Here,
we
investigate
the
large-scale
enumeration
targeted
isoquinuclidines.
These
“natural-product-like”
rare
in
current
functionally
congested,
making
them
as
receptor
probes.
Using
modular,
four-component
scheme,
built
docked
virtual
over
14.6
million
isoquinuclidines
against
both
µ-
κ
-opioid
receptors
(MOR
KOR,
respectively).
Synthesis
experimental
testing
18
prioritized
compounds
found
nine
with
low
µM
affinities.
Structure-based
optimization
low-
sub-
nM
antagonists
inverse
agonists
targeting
receptors.
Cryo-electron
microscopy
(cryoEM)
structures
illuminate
origins
activity
on
each
target.
In
mouse
behavioral
studies,
member
series
joint
MOR-antagonist
KOR-inverse-agonist
reversed
morphine-induced
analgesia,
phenocopying
MOR-selective
anti-overdose
agent
naloxone.
Encouragingly,
new
molecule
induced
less
severe
opioid-induced
withdrawal
symptoms
compared
to
naloxone
during
precipitation,
did
not
induce
conditioned-place
aversion,
likely
reflecting
reduction
dysphoria
due
compound’s
KOR-inverse
agonism.
The
strengths
weaknesses
bespoke
docking,
for
opioid
polypharmacology,
will
be
considered.
Quarterly Reviews of Biophysics,
Год журнала:
2025,
Номер
58
Опубликована: Янв. 1, 2025
Abstract
Allostery
describes
the
ability
of
biological
macromolecules
to
transmit
signals
spatially
through
molecule
from
an
allosteric
site
–
a
that
is
distinct
orthosteric
binding
sites
primary,
endogenous
ligands
functional
or
active
site.
This
review
starts
with
historical
overview
and
description
classical
example
allostery
hemoglobin
other
well-known
examples
(aspartate
transcarbamoylase,
Lac
repressor,
kinases,
G-protein-coupled
receptors,
adenosine
triphosphate
synthase,
chaperonin).
We
then
discuss
fringe
allostery,
including
intrinsically
disordered
proteins
inter-enzyme
influence
dynamics,
entropy,
conformational
ensembles
landscapes
on
mechanisms,
capture
essence
field.
Thereafter,
we
give
over
central
methods
for
investigating
molecular
covering
experimental
techniques
as
well
simulations
artificial
intelligence
(AI)-based
methods.
conclude
allostery-based
drug
discovery,
its
challenges
opportunities:
recent
advent
AI-based
methods,
compounds
are
set
revolutionize
discovery
medical
treatments.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 27, 2025
The
rapid
expansion
of
readily
accessible
compounds
over
the
past
six
years
has
transformed
molecular
docking,
improving
hit
rates
and
affinities.
While
many
millions
molecules
may
score
well
in
a
docking
campaign,
results
are
rarely
fully
shared,
hindering
benchmarking
machine
learning
chemical
space
exploration
methods
that
seek
to
explore
expanding
spaces.
To
address
this
gap,
we
develop
website
providing
access
recent
large
library
campaigns,
including
poses,
scores,
vitro
for
campaigns
against
11
targets,
with
6.3
billion
docked
3729
experimentally
tested.
In
simple
proof-of-concept
study
speaks
new
library's
utility,
use
database
train
models
predict
scores
find
top
0.01%
scoring
while
evaluating
only
1%
library.
Even
these
studies,
some
interesting
trends
emerge:
unsurprisingly,
as
on
larger
sets,
they
perform
better;
less
expected,
could
achieve
high
correlations
yet
still
fail
enrich
docking-discovered
ligands,
or
even
docking-ranked
molecules.
It
will
be
see
how
more
sophisticated
than
studies
undertaken
here;
is
openly
available
at
lsd.docking.org.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Март 19, 2025
There
is
currently
a
resurgence
in
exploring
the
utility
of
classical
psychedelics
to
treat
depression,
addiction,
anxiety
disorders,
cluster
headaches,
and
many
other
neuropsychiatric
disorders.
A
biological
target
these
compounds,
hypothesized
for
their
therapeutic
actions,
5-HT2A
serotonin
receptor.
Here,
we
present
7
cryo-EM
structures
covering
all
major
compound
classes
psychedelic
non-psychedelic
agonists,
including
β-arrestin-biased
RS130-180.
Identifying
molecular
interactions
between
various
receptor
reveals
both
common
distinct
motifs
among
examined
chemotypes.
These
findings
lead
broader
mechanistic
understanding
activation,
which
can
catalyze
development
novel
chemotypes
with
potential
fewer
side
effects.
The
authors
hallucinogenic
non-hallucinogenic
compounds
across
multiple
bound
receptor,
shedding
light
onto
ligand
specificity
signaling
bias.
Small
molecule
drug
design
hinges
on
obtaining
co-crystallized
ligand-protein
structures.
Despite
AlphaFold2's
strides
in
protein
native
structure
prediction,
its
focus
apo
structures
overlooks
ligands
and
associated
holo
Moreover,
designing
selective
drugs
often
benefits
from
the
targeting
of
diverse
metastable
conformations.
Therefore,
direct
application
AlphaFold2
models
virtual
screening
discovery
remains
tentative.
Here,
we
demonstrate
an
based
framework
combined
with
all-atom
enhanced
sampling
molecular
dynamics
induced
fit
docking,
named
AF2RAVE-Glide,
to
conduct
computational
model
small
binding
kinase
conformations,
initiated
sequences.
We
AF2RAVE-Glide
workflow
three
different
kinases
their
type
I
II
inhibitors,
special
emphasis
known
inhibitors
which
target
classical
DFG-out
state.
These
states
are
not
easy
sample
AlphaFold2.
Here
how
AF2RAVE
these
conformations
can
be
sampled
for
high
enough
accuracy
enable
subsequent
docking
more
than
50%
success
rates
across
calculations.
believe
protocol
should
deployable
other
proteins
generally.