Modification of proteins with azobenzene crosslinkers using reversible covalent bonds.
Org Biomol Chem
; 20(44): 8649-8656, 2022 Nov 16.
Article
in En
| MEDLINE
| ID: mdl-36300379
ABSTRACT
Thiol-reactive reagents designed for the chemical modification of proteins cannot, in general, be used directly for the modification of intracellular targets because the presence of millimolar concentrations of glutathione inside cells effectively outcompetes reaction with target thiols. Here we report an equilibrium, entropic strategy for achieving target selectivity using a cyanoacrylate-based thiol-reactive cross-linker (BCNA) with two reactive sites. This compound exhibits â³200-fold selectivity for reaction with target peptides and proteins containing appropriately spaced pairs of thiols, versus reaction with mono-thiols. Photo-isomerization of the azobenzene moiety of the cross-linker can be used to affect the conformation of the target peptide or protein. This approach suggests a general strategy for the chemical modification of intracellular peptide and protein targets.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Azo Compounds
/
Proteins
Language:
En
Journal:
Org Biomol Chem
Journal subject:
BIOQUIMICA
/
QUIMICA
Year:
2022
Type:
Article
Affiliation country:
Japan