EMAIL THIS PAGE TO A FRIEND

Analytical biochemistry

Conjugation of synthetic peptides to proteins: quantitation from S-carboxymethylcysteine released upon acid hydrolysis.


PMID 2372110

Abstract

A method described here for conjugating synthetic peptides to carrier proteins provides a convenient method for determining peptide-to-carrier protein ratios. N-Bromoacetyl-containing peptides are reacted in situ with carrier proteins in which the disulfide bonds were reduced with tri-n-butylphosphine. At pH 7-8 and ambient temperature, the newly formed sulfhydryl groups of the carrier protein react exclusively with the bromoacetyl mokiety of the peptide to form conjugates having stable thio ether linkages. Acid hydrolyses of these conjugates release S-carboxymethylcysteine in amounts proportional to the amounts of peptides conjugated and thus allow determination of peptide-to-protein ratios.

Related Materials

Product #

Image

Description

Molecular Formula

Add to Cart

B8271
Bromoacetic acid N-hydroxysuccinimide ester, ≥95%, powder
C6H6BrNO4