Table 3.
Results of screening PubMed abstracts for PTM information
| 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) |
“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).