bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 17, 2023
Abstract
Motivation
Eukaryotic
linear
motifs
(ELMs),
or
Short
Linear
Motifs
(SLiMs),
are
protein
interaction
modules
that
play
an
essential
role
in
cellular
processes
and
signaling
networks
often
involved
diseases
like
cancer.
The
ELM
database
is
a
collection
of
manually
curated
motif
knowledge
from
scientific
papers.
It
has
become
crucial
resource
for
cataloging
biology
recognizing
candidate
ELMs
novel
amino
acid
sequences.
Users
can
search
sequences
UniProt
IDs
on
the
web
interface.
However,
as
with
many
services,
there
limitations
swift
processing
large-scale
queries
through
interface
API
calls,
and,
therefore,
integration
into
function
analysis
pipelines
limited.
Results
To
allow
swift,
analyses
using
database,
we
have
developed
Python
command
line
tool,
gget
elm
,
which
relies
local
computations
efficiently
finding
user-submitted
identifiers.
increases
accessibility
to
information
stored
allows
scalable
searches
motif-mediated
sites
Availability
implementation
manual
source
code
available
at
https://github.com/pachterlab/gget
.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: April 26, 2023
Viruses
mimic
host
short
linear
motifs
(SLiMs)
to
hijack
and
deregulate
cellular
functions.
Studies
of
motif-mediated
interactions
therefore
provide
insight
into
virus-host
dependencies,
reveal
targets
for
therapeutic
intervention.
Here,
we
describe
the
pan-viral
discovery
1712
SLiM-based
using
a
phage
peptidome
tiling
intrinsically
disordered
protein
regions
229
RNA
viruses.
We
find
mimicry
SLiMs
be
ubiquitous
viral
strategy,
novel
proteins
hijacked
by
viruses,
identify
pathways
frequently
deregulated
motif
mimicry.
Using
structural
biophysical
analyses,
show
that
mimicry-based
have
similar
binding
strength
bound
conformations
as
endogenous
interactions.
Finally,
establish
polyadenylate-binding
1
potential
target
broad-spectrum
antiviral
agent
development.
Our
platform
enables
rapid
mechanisms
interference
identification
which
can
aid
in
combating
future
epidemics
pandemics.
Frontiers in Cellular and Infection Microbiology,
Journal Year:
2025,
Volume and Issue:
15
Published: Feb. 14, 2025
Ehrlichia
chaffeensis
(
E.
)
has
recently
emerged
as
an
intracellular
bacterial
pathogen
with
sophisticated
survival
mechanisms
that
include
repurposing
evolutionarily
conserved
eukaryotic
cell
signaling
pathways
for
immune
evasion.
exploits
four
major
developmental
(Wnt,
Notch,
Hedgehog,
and
Hippo)
using
s
hort
li
near
m
otif
(SLiM)
ligand
mimicry
to
initiate
cascades.
Dysregulation
of
these
leading
unchecked
is
implicated
in
various
diseases,
most
notably
cancer.
Wnt,
Hedgehog
Hippo
inhibit
apoptosis
co-opt
other
cellular
functions
promote
infection.
This
review
will
explore
the
exploited
during
infection
new
discoveries
have
illuminated
this
interesting
example
convergence
cancer
biology.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: March 29, 2025
Abstract
Serine-threonine
phosphatases
have
been
challenging
to
study
because
of
the
lack
specific
inhibitors.
Their
catalytic
domains
are
druggable,
but
these
shared
or
very
similar
between
individual
phosphatase
complexes,
precluding
their
inhibition.
Instead,
complexes
often
achieve
specificity
by
interacting
with
short
linear
motifs
(SLiMs)
in
substrates
binding
partners.
We
develop
here
a
chemical-genetic
system
rapidly
inhibit
interactions
within
PP2A-B56
family.
Drug-inducible
recruitment
ectopic
SLiMs
(“directSLiMs”)
is
used
block
SLiM-binding
pocket
on
B56
regulatory
subunit,
thereby
displacing
endogenous
interactors
and
inhibiting
activity
seconds.
use
this
characterise
during
mitosis
identify
role
for
allowing
metaphase
kinetochores
properly
sense
tension
maintain
microtubule
attachments.
The
directSLiMs
approach
can
be
any
other
phosphatase,
enzyme
protein
that
uses
critical
interface,
providing
powerful
strategy
proteins
once
considered
“undruggable”.
ABSTRACT
Molecular
mimicry
of
short
linear
interaction
motifs
has
emerged
as
a
key
mechanism
for
viral
proteins
binding
host
domains
and
hijacking
cell
processes.
Here,
we
examine
the
role
RNA
virus
sequence
diversity
in
dynamics
virus-host
interface
by
analyzing
uniquely
vast
record
viable
SARS-CoV-2
species
with
focus
on
multi-functional
nucleocapsid
protein.
We
observe
abundant
presentation
encoding
several
essential
protein
interactions,
alongside
majority
possibly
non-functional
randomly
occurring
motif
sequences
absent
subsets
species.
A
large
number
emerge
ex
nihilo
through
transient
mutations
relative
to
ancestral
consensus
sequence.
The
observed
mutational
landscape
implies
an
accessible
space
that
spans
at
least
25%
known
eukaryotic
motifs.
This
reveals
highly
dynamic
process
capacity
broadly
explore
motifs,
allowing
rapidly
evolve
interface.
IMPORTANCE
Short
(SLiMs)
are
3–10
amino
acid
long
intrinsically
disordered
regions
(IDRs)
serve
ubiquitous
protein-protein
modules
cells.
Through
molecular
mimicry,
viruses
hijack
these
control
cellular
It
is
thought
small
size
SLiMs
high
mutation
frequencies
IDRs
allow
rapid
adaptation.
However,
salient
characteristic
viruses,
due
replication
errors,
their
obligate
existence
mutant
swarms.
Taking
advantage
genomic
database
SARS-CoV-2,
here,
analyze
SLiMs,
focusing
abundant,
find
produces
abundance
transiently
present
allows
efficiently
host-virus
PubMed,
Journal Year:
2023,
Volume and Issue:
22, P. 1113 - 1128
Published: Jan. 1, 2023
The
virus
interacts
with
its
hosts
by
developing
protein-protein
interactions.
Most
viruses
employ
protein
interactions
to
imitate
the
host
protein:
A
viral
same
amino
acid
sequence
or
structure
as
attaches
protein's
binding
partner
and
interferes
pathways.
Being
opportunistic,
have
evolved
manipulate
cellular
mechanisms
mimicking
short
linear
motifs.
In
this
review,
we
shed
light
on
current
understanding
of
mimicry
via
motifs
focus
genetically
different
subtypes
providing
recent
examples
evidence
how
high-throughput
methods
can
be
a
reliable
source
study
SLiM-mediated
mimicry.