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. 2024 May 29;43(14):3009–3026. doi: 10.1038/s44318-024-00128-y

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Creative Commons Public Domain Dedication waiver http://creativecommons.org/publicdomain/zero/1.0/ applies to the data associated with this article, unless otherwise stated in a credit line to the data, but does not extend to the graphical or creative elements of illustrations, charts, or figures. This waiver removes legal barriers to the re-use and mining of research data. According to standard scholarly practice, it is recommended to provide appropriate citation and attribution whenever technically possible.

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The figure shows C4BPα (gray), C4BPβ (blue), and ProS (teal) N-glycosylation as identified by peptide-centric glycoproteomics and quantified based on PSMs. Modifications were visualized as bar charts for each site modified with schematic depictions of the most abundant N-glycan moiety. The data revealed the occupation of the majority of C4BP sites by HexNAc4Hex5 with either one or two sialic acids corresponding to the complex biantennary glycans. The vast majority of sites displayed a low abundance of unoccupied sites (−), except for C4BPα (N221 and N528) and C4BPβ (N71), which exhibited more than 20% unmodified residues. The following abbreviations were used: N–HexNAc, H–Hex, F–dHex, and S–NeuAc. Source data are available online for this figure.