title: A new method for conjugation of carbohydrates to proteins using an aminooxy-thiol heterobifunctional linker.
abstract: A new, efficient, and mild protocol is presented for the coupling of saccharides to proteins. First, a heterobifunctional aminooxy-thiol linker is coupled to the bromoacylated protein to introduce aminooxy groups through thioether linkages. Condensation of the aminooxylated protein and aldehydo/keto-derivatized carbohydrates affords covalent saccharide-protein constructs. Uncoupled saccharide can be recovered in its original form. The scope of our protocol is exemplified by the coupling of neutral mono- and tetrasaccharides and a negatively charged ribitol-phosphate construct to BSA.
authors.affiliation: National Institute of Child Health and Human Development, National Institutes of Health, 31 Center Drive, MSC 2423, Bethesda, MD 20892-2423, USA.
authors.forename: Joanna
authors.initials: J
authors.lastname: Kubler-Kielb
authors.forename: Vince
authors.initials: V
authors.lastname: Pozsgay
mesh_terms: D002241:Carbohydrates / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D011506:Proteins / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*
chemical_list: D002241:Carbohydrates; D011506:Proteins; D013438:Sulfhydryl Compounds