Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2014 Jun 11;9(6):e99026. doi: 10.1371/journal.pone.0099026

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2014 Takahashi et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

PMC Copyright notice

(A) Ser²³²-Arg²⁴⁵ HR O-glycan profile of IgA1 (Ale) myeloma protein enzymatically sialylated with ST3Gal1. (B) LC-CID tandem MS spectrum of Ser²³²-Arg²⁴⁵ with GalNAc₁Gal₁NeuAc₁. Absence of sialylated GalNAc (shown in blue parenthesis) indicates that NeuAc is attached to Gal (by an α2,3-linkage) in the precursor ion. Additionally, the presence of the Gal-NeuAc oxonium ion confirms the attachment of the NeuAc to Gal.