| PDB | Chain | Name | Length | Cyclization | Rings | Disulfide | Type | Source | Method |
|---|---|---|---|---|---|---|---|---|---|
| 2LDS | A | INSECTICIDAL TOXIN LAIT1 | 36 | SS | 2 | 2 | Natural | Liocheles Australasiae | SOLUTION NMR |
| 2LER | A | CONOTOXIN PC16A | 11 | SS | 2 | 2 | Natural | Conus Pictus | SOLUTION NMR |
| 2LET | A | TRYPSIN INHIBITOR II | 28 | SS | 3 | 3 | Natural | Ecballium Elaterium | SOLUTION NMR |
| 2LEU | A | LEUCOCIN A | 37 | SS | 1 | 1 | Natural | Leuconostoc Gelidum | SOLUTION NMR |
| 2LEW | A | ALPHA-DEFENSIN 4 | 32 | SS | 3 | 3 | Natural | Mus Musculus | SOLUTION NMR |
| 2LEY | A | ALPHA-DEFENSIN 4 | 32 | SS | 3 | 3 | Natural | Mus Musculus | SOLUTION NMR |
| 2LG4 | A | AURELIN | 40 | SS | 3 | 3 | Natural | Aurelia Aurita | SOLUTION NMR |
| 2LG5 | A | GALLINACIN-2 | 36 | SS | 3 | 3 | Natural | Gallus Gallus | SOLUTION NMR |
| 2LG6 | A | GALLINACIN-2 | 36 | SS | 3 | 3 | Natural | Gallus Gallus | SOLUTION NMR |
| 2LGB | A | INSULIN A CHAIN | 22 | SS | 1 | 1 | Natural | Homo Sapiens | SOLUTION NMR |
| 2LI3 | A | POTASSIUM CHANNEL TOXIN KAPPA-KTX3.1 | 30 | SS | 3 | 3 | Natural | Tityus Trivittatus | SOLUTION NMR |
| 2LIX | A | POTASSIUM CHANNEL TOXINS | 27 | SS | 3 | 3 | Natural | Lychas Mucronatus | SOLUTION NMR |
| 2LIY | A | EPIDERMAL PATTERNING FACTOR-LIKE PROTEIN 9 | 45 | SS | 3 | 3 | Natural | Arabidopsis Thaliana | SOLUTION NMR |
| 2LJ7 | A | DEFENSIN LC-DEF | 47 | SS | 5 | 5 | Natural | Lens Culinaris Subsp Culinaris | SOLUTION NMR |
| 2LJS | A | TRYPSIN INHIBITOR 3 | 30 | SS | 3 | 3 | Non-natural | Momordica Cochinchinensis | SOLUTION NMR |
| 2LL1 | A | U1-TRTX-SP1A | 33 | SS | 3 | 3 | Natural | Theraphosidae | SOLUTION NMR |
| 2LL5 | A | CYCLO-TC1 | 22 | H2T | 1 | - | Natural | Unknow | SOLUTION NMR |
| 2LLD | A | LUCIFENSIN | 40 | SS | 3 | 3 | Natural | Lucilia Sericata | SOLUTION NMR |
| 2LLR | A | ALVINELLACIN | 22 | SS | 2 | 2 | Natural | Unknow | SOLUTION NMR |
| 2LMZ | A | CONOTOXIN IM17A | 42 | SS | 3 | 3 | Natural | Conus Imperialis | SOLUTION NMR |
| 2LN4 | A | COPRISIN | 44 | SS | 3 | 3 | Natural | Copris Tripartitus | SOLUTION NMR |
| 2LO7 | A | TOXIN TS16 | 31 | SS | 3 | 3 | Natural | Tityus Serrulatus | SOLUTION NMR |
| 2LO9 | A | MU-CONOTOXIN BUIIIB | 25 | SS | 3 | 3 | Natural | Conus Bullatus | SOLUTION NMR |
| 2LOC | A | MU-CONOTOXIN BUIIIB | 25 | SS | 3 | 3 | Non-natural | Conus Bullatus | SOLUTION NMR |
| 2LP8 | B | BCL-2-LIKE PROTEIN 1 | 18 | Sidechain | 1 | - | Natural | Helianthus Annuus | SOLUTION NMR |
| 2LQA | A | ASTEROPSIN A | 37 | SS | 3 | 3 | Non-natural | Asteropus | SOLUTION NMR |
| 2LQX | A | TRYPSIN INHIBITOR BWI-2C | 41 | SS | 2 | 2 | Natural | Fagopyrum Esculentum | SOLUTION NMR |
| 2LR3 | A | DEFENSIN | 47 | SS | 4 | 4 | Natural | Medicago Truncatula | SOLUTION NMR |
| 2LR5 | A | MICASIN | 38 | SS | 3 | 3 | Natural | Arthroderma Otae | SOLUTION NMR |
| 2LR7 | A | CATHELICIDIN-PY | 29 | SS | 1 | 1 | Natural | Rana Catesbeiana | SOLUTION NMR |
| 2LR9 | A | RHO-CONOTOXIN TIA | 20 | SS | 2 | 2 | Natural | Conus Tulipa | SOLUTION NMR |
| 2LS1 | A | UNCHARACTERIZED PROTEIN | 20 | SS | 2 | 2 | Natural | Streptomyces Sviceus | SOLUTION NMR |
| 2LSQ | A | ANALOG OF THE FRAGMENT 197-221 OF BETA-1 ADRENORECEPTOR | 25 | SS | 2 | 2 | Natural | Homo Sapiens | SOLUTION NMR |
| 2LT8 | A | EUROCIN | 42 | SS | 3 | 3 | Natural | Eurotium Amstelodami | SOLUTION NMR |
| 2LU6 | 1 | MIDI PEPTIDE DESIGNED BASED ON M-CONOTOXINS | 14 | SS | 2 | 2 | Natural | Unknow | SOLUTION NMR |
| 2LU9 | A | POTASSIUM CHANNEL TOXIN ALPHA-KTX 5.4 | 31 | SS | 3 | 3 | Natural | Mesobuthus Tamulus | SOLUTION NMR |
| 2LUR | A | KALATA | 29 | SS | 4 | 3 | Natural | Unknow | SOLUTION NMR |
| 2LWB | A | ADHESIN WI-1 | 20 | SS | 1 | 1 | Natural | Ajellomyces Dermatitidis | SOLUTION NMR |
| 2LWL | A | BETA-DEFENSIN 106 | 49 | SS | 1 | 1 | Natural | Homo Sapiens | SOLUTION NMR |
| 2LWQ | A | PAWS DERIVED PEPTIDE 11 (PDP-11) | 16 | SS | 1 | 1 | Natural | Unknow | SOLUTION NMR |
| 2LWS | A | PAWS DERIVED PEPTIDE 4 (PDP-4) | 12 | SS | 2 | 1 | Natural | Unknow | SOLUTION NMR |
| 2LWT | A | PAWS DERIVED PEPTIDE 5 (PDP-5) | 18 | SS | 2 | 1 | Natural | Unknow | SOLUTION NMR |
| 2LWU | A | PAWS DERIVED PEPTIDE 7 (PDP-7) | 15 | SS | 2 | 1 | Natural | Unknow | SOLUTION NMR |
| 2LWV | A | PAWS DERIVED PEPTIDE 6 (PDP-6) | 17 | SS | 2 | 1 | Natural | Unknow | SOLUTION NMR |
| 2LXG | A | MU-CONOTOXIN KIIIA | 17 | SS | 3 | 3 | Natural | Conus Kinoshitai | SOLUTION NMR |
| 2LXO | A | CHIMERIC PEPTIDE | 44 | SS | 3 | 3 | Natural | Synthetic Construct | SOLUTION NMR |
| 2LXZ | A | DEFENSIN-5 | 32 | SS | 3 | 3 | Natural | Homo Sapiens | SOLUTION NMR |
| 2LYE | A | BTD-2 | 18 | SS | 4 | 3 | Natural | Unknow | SOLUTION NMR |
| 2LYF | A | RTD-1 | 18 | SS | 4 | 3 | Natural | Unknow | SOLUTION NMR |
| 2LZ5 | A | CONOTOXIN_TXIB | 17 | SS | 2 | 2 | Natural | Conus Textile | SOLUTION NMR |