Journal of Cell Science,
Год журнала:
2023,
Номер
136(19)
Опубликована: Сен. 27, 2023
ABSTRACT
Proximity
labeling
with
genetically
encoded
enzymes
is
widely
used
to
study
protein–protein
interactions
in
cells.
However,
the
accuracy
of
proximity
limited
by
a
lack
control
over
enzymatic
process.
Here,
we
present
light-activated
technology
for
mapping
at
cell
membrane
high
and
precision.
Our
technology,
called
BioID
(LAB),
fuses
two
halves
split-TurboID
enzyme
photodimeric
proteins
CRY2
CIB1.
We
demonstrate,
multiple
lines,
that
upon
illumination
blue
light,
CIB1
dimerize,
reconstitute
initiate
biotinylation.
Turning
off
light
leads
dissociation
halts
benchmark
LAB
against
TurboID
method
measuring
proteome
E-cadherin,
an
essential
cell–cell
adhesion
protein.
show
can
map
E-cadherin-binding
partners
higher
significantly
fewer
false
positives
than
TurboID.
Journal of Biological Chemistry,
Год журнала:
2022,
Номер
298(9), С. 102343 - 102343
Опубликована: Авг. 3, 2022
Proximity-dependent
protein
labeling
provides
a
powerful
in
vivo
strategy
to
characterize
the
interactomes
of
specific
proteins.
We
previously
optimized
proximity
protocol
for
Caenorhabditis
elegans
using
highly
active
biotin
ligase
TurboID.
A
significant
constraint
on
sensitivity
TurboID
is
presence
abundant
endogenously
biotinylated
proteins
that
take
up
bandwidth
mass
spectrometer,
notably
carboxylases
use
as
cofactor.
In
C.
elegans,
these
comprise
POD-2/acetyl-CoA
carboxylase
alpha,
PCCA-1/propionyl-CoA
PYC-1/pyruvate
carboxylase,
and
MCCC-1/methylcrotonyl-CoA
alpha.
Here,
we
developed
ways
remove
prior
streptavidin
purification
spectrometry
by
engineering
their
corresponding
genes
add
C-terminal
His
Trends in Biochemical Sciences,
Год журнала:
2023,
Номер
49(3), С. 224 - 235
Опубликована: Дек. 30, 2023
At
its
most
fundamental
level,
life
is
a
collection
of
synchronized
cellular
processes
driven
by
interactions
among
biomolecules.
Proximity
labeling
has
emerged
as
powerful
technique
to
capture
these
in
native
settings,
revealing
previously
unexplored
elements
biology.
This
review
highlights
recent
developments
proximity
labeling,
focusing
on
methods
that
push
the
technologies
beyond
classic
bait-prey
paradigm,
such
RNA–protein
interactions,
ligand/small-molecule–protein
cell
surface
protein
and
subcellular
trafficking.
The
advancement
address
different
biological
problems
will
accelerate
our
understanding
complex
systems
make
up
life.
Journal of Cell Science,
Год журнала:
2023,
Номер
136(19)
Опубликована: Сен. 27, 2023
ABSTRACT
Proximity
labeling
with
genetically
encoded
enzymes
is
widely
used
to
study
protein–protein
interactions
in
cells.
However,
the
accuracy
of
proximity
limited
by
a
lack
control
over
enzymatic
process.
Here,
we
present
light-activated
technology
for
mapping
at
cell
membrane
high
and
precision.
Our
technology,
called
BioID
(LAB),
fuses
two
halves
split-TurboID
enzyme
photodimeric
proteins
CRY2
CIB1.
We
demonstrate,
multiple
lines,
that
upon
illumination
blue
light,
CIB1
dimerize,
reconstitute
initiate
biotinylation.
Turning
off
light
leads
dissociation
halts
benchmark
LAB
against
TurboID
method
measuring
proteome
E-cadherin,
an
essential
cell–cell
adhesion
protein.
show
can
map
E-cadherin-binding
partners
higher
significantly
fewer
false
positives
than
TurboID.