Employing Broad Substrate Specificity of Omniligase to Generate Phage-Encoded Bicyclic Peptide Libraries for Ligand Discovery
Xiao-Cui Wan,
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Wenjing Zhu,
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Huimin Wei
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et al.
Organic Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 17, 2025
We
report
an
enzymatic
cyclization
strategy
termed
omniligase-mediated
peptide
bicyclization.
An
electrophilic
group
was
introduced
into
the
recognition
sequence
of
omniligase
to
achieve
intramolecular
bicyclization
with
Cys
residues.
In
combination
phage
display,
we
identified
a
bicyclic
ligand
targeting
TEAD4
KD
value
1.5
μM,
100-fold
lower
than
its
linear
version,
demonstrating
utility
this
platform
for
discovering
ligands.
Language: Английский
Helicity‐Dependent Enzymatic Peptide Cyclization
Canan Durukan,
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Jannik Faierson,
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Isabel van der Wal
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et al.
Journal of Peptide Science,
Journal Year:
2025,
Volume and Issue:
31(6)
Published: April 27, 2025
ABSTRACT
The
secondary
structure
plays
a
crucial
role
in
the
biological
activity
of
peptides.
Various
strategies
have
been
developed
to
stabilize
particular
peptide
conformations,
including
sequence
modifications
and
macrocyclization
approaches.
Often,
interplay
between
conformational
constraint
flexibility
is
central
bioactivity.
Here,
we
investigate
how
α‐helicity
influences
enzymatic
head‐to‐tail
cyclization
using
an
engineered
Sortase.
We
show
that
peptides
with
low
helicity
readily
undergo
intramolecular
cyclization,
while
more
rigid,
helical
exhibit
complex
behaviors
cyclic
dimer
formation.
These
findings
reveal
increased
rigidity
can
redirect
reactions
from
intermolecular
processes,
demonstrates
changes
molecular
guide
chemical
reactivity.
insights
advance
design
peptide‐derived
materials,
hydrogels,
stimuli‐responsive
probes.
Language: Английский
Generation of antibody–drug conjugates by proximity-driven acyl transfer and sortase-mediated ligation
Zhihui Cui,
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Hua Zhang,
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Feng-Hao Zheng
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et al.
Organic & Biomolecular Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
We
report
a
sortase-based
site-specific
antibody–drug
conjugation
strategy
involving
an
affinity
peptide-directed
acyl
transfer
reaction
and
the
sortase-mediated
peptide
ligation
that
allows
for
attachment
of
protein-based
payloads
to
antibodies.
Language: Английский