Classification based on Type of Modifications
It allow to browse the peptides of SATPdb based on residue modifications (terminal/chemical modifications) present in a peptide. There are wide range of residue modifications present in SATPdb peptides. For more information see HELP page.
Summary of Peptides having N-terminal Modifications
| N terminal modifications | Number of entries |
| Free | 17950 |
| Acetylation | 448 |
| Labelled with fluorescein | 219 |
| Biotinylated | 82 |
| benzyloxycarbonyl | 37 |
| Labelled with K-FITC or k-FITC at N-terminus | 44 |
| benzoyl | 36 |
| FITC labeling | 38 |
| Labeled with Biotinyl-bAla | 36 |
| Beta-alanine | 3 |
| Formylation | 4 |
| Labelled with fluorescein with aminohexanoic space | 27 |
| Biotin labeling | 26 |
| o-aminobenzoic acid | 21 |
| Morpholino-CO | 6 |
| Lysine N-trimethylation | 1 |
| Others | 369 |
Summary of Peptides having C-terminal Modifications
| C terminal modifications | Number of entries |
| Free | 15897 |
| Amidation | 3104 |
| Al=aldehyde | 15 |
| Carboxamide | 2 |
| CH2F | 13 |
| Fusion with beta-Gal | 15 |
| Unknown | 14 |
| C-terminal Gly Cys amide labelled with fluorescein | 13 |
| Cysteamide group | 11 |
| OtBu | 10 |
| Others | 122 |
Summary of Peptides having Modified Residues
| Nonnatural/Chemical modifications | Number of entries |
|---|
| None | 17783 |
| 4-hydroxyproline | 266 |
| Cα -dialkylated glycine (Aaa2,2 ) | 4 |
| pyroglutamine | 111 |
| Gamma carboxylic glutamic acid (Gla) | 69 |
| Cαα -dialkylated glycine (Aaa1,1 ) | 3 |
| norleucine | 55 |
| homophenylalanine | 10 |
| 3-nitrotyrosine | 21 |
| Lysine Nε-Trimethylation | 1 |
| S-acetamidomethyl cysteine | 20 |
| Others | 1232 |