In depth analysis of the contribution of specific glycoproteins to the overall bovine whey N-linked glycoprofile

Rivca L Valk-Weeber, Cecile Deelman-Driessen, Lubbert Dijkhuizen, Talitha Eshuis-de Ruiter, Sander van Leeuwen*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

12 Citaten (Scopus)
100 Downloads (Pure)

Samenvatting

The N-linked glycoprofile of bovine whey is the combined result of individual protein glycoprofiles. In this work, we provide in-depth structural information on the glycan structures of known whey glycoproteins, namely lactoferrin, lactoperoxidase, α-lactalbumin, immunoglobulin-G (IgG) and glycosylation dependent cellular adhesion molecule 1 (GlyCAM-1, PP3). The majority (~95%) of N-glycans present in the overall whey glycoprofile were attributed to three proteins; Lactoferrin, IgG and GlyCAM-1. We identified specific signature glycans for these main proteins; Lactoferrin contributes oligomannose-type glycans, while IgG carries fucosylated di-antennary glycans with Gal-β(1,4)GlcNAc (LacNAc) motifs. GlyCAM-1 is the sole whey glycoprotein carrying tri- and tetra-antennary structures, with a high degree of fucosylation and sialylation. Signature glycans can be used to recognize individual proteins in the overall whey glycoprofile, as well as for protein concentration estimations. Application of the whey glycoprofile analysis to colostrum samples revealed dynamic protein concentration changes for IgG, lactoferrin and GlyCAM-1 over time.

Originele taal-2English
Artikelnummeracs.jafc.0c00959
Pagina's (van-tot)6544-6553
Aantal pagina's10
TijdschriftJournal of Agricultural and Food Chemistry
Volume68
Nummer van het tijdschrift24
Vroegere onlinedatum2020
DOI's
StatusPublished - 17-jun.-2020

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