Site-Specific Fluorogenic Protein Labelling Agent for Bioconjugation
نویسندگان
چکیده
منابع مشابه
De novo helical peptides as target sequences for a specific, fluorogenic protein labelling strategy.
New methods are needed to selectively label proteins in a manner that minimally perturbs their structures and functions. We have developed a 'small molecule'-based labelling technique that relies on the use of dimaleimide fluorogens that react with a target peptide sequence that presents appropriately spaced, solvent-exposed Cys residues. The thiol addition reaction between target sequence and ...
متن کاملIntrinsic bioconjugation for site-specific protein PEGylation at N-terminal serine.
Recently developed chemical ligation protocols were elaborated for rapid N-terminal protein PEGylation. We introduce a PEG-salicylaldehyde ester and demonstrate its site-specific ligation to the N-terminus of the RNase S protein and to the therapeutic polypeptide PTH (1-34).
متن کاملSite-specific labelling with a metal chelator for protein-structure refinement.
A single free Cys sidechain in the N-terminal domain of the E. coli arginine repressor was covalently derivatized with S-cysteaminyl-EDTA for site-specific attachment of paramagnetic metal ions. The effects of chelated metal ions were monitored with (15)N-HSQC spectra. Complexation of Co(2+), which has a fast relaxing electron spin, resulted in significant pseudocontact shifts, but also in peak...
متن کاملSalt Effect Accelerates Site-Selective Cysteine Bioconjugation
Highly efficient and selective chemical reactions are desired. For small molecule chemistry, the reaction rate can be varied by changing the concentration, temperature, and solvent used. In contrast for large biomolecules, the reaction rate is difficult to modify by adjusting these variables because stringent biocompatible reaction conditions are required. Here we show that adding salts can cha...
متن کاملCanonical Labelling of Site Graphs
We investigate algorithms for canonical labelling of site graphs, i.e. graphs in which edges bind vertices on sites with locally unique names. We first show that the problem of canonical labelling of site graphs reduces to the problem of canonical labelling of graphs with edge colourings. We then present two canonical labelling algorithms based on edge enumeration, and a third based on an exten...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biomolecules
سال: 2020
ISSN: 2218-273X
DOI: 10.3390/biom10030369