Does anyone know if there is a glycomics database with info on sugar modifications etc of proteins?

I have a few protein/gene names and would just like to get some indication of whether they're known to be glycated and whether the sugars have been identified.
Answering my own question (but not in a remotely exhaustive or even particularly thorough manner 😅):

 - https://unicarb-db.expasy.org/
 - https://acgg.asia/db/gpdb/
