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Table 3 Results of screening PubMed abstracts for PTM information

From: Application of text-mining for updating protein post-translational modification annotation in UniProtKB

Retrieved abstracts 75,777
With PTM information 1,266 (863)
Acetylation 119 (56)
Amidation 96 (6)
Disulfide bridge 173 (42)
Glycosylation 108 (27)
Methylation 26 (6)
Phosphorylation 730 (730)
Sulfation 14 (2)
  1. “Retrieved abstracts” are the result of querying PubMed with the keyword “protein”. The number of PTMs with positional information is shown in parentheses for each PTM type (site information was a prerequisite for retrieval of phosphorylation information).