Index PDB ID Protein Name Organism UniProt ID Ligand Name Canonical SMILES HET Code 1 1M4B Interleukin-2 Homo sapiens (Human) P60568 (2S)-N-{3-[(3-aminopropyl)disulfanyl]propyl}-2-{2-[(2R)-2-carbamimidamido-2-cyclohexylacetamido]acetamido}propanamide C[C@H](NC(=O)CNC(=O)[C@H](NC(N)=N)C1CCCCC1)C(=O)NCCCSSCCCN NMP 2 1M4A Interleukin-2 Homo sapiens (Human) P60568 (2Z)-2-({2-[(2-hydroxyethyl)disulfanyl]ethoxy}imino)-2-(1H-indol-3-yl)acetic acid OCCSSCCO/N=C(\C([O-])=O)c1c[nH]c(c12)cccc2 MPE 3 1NBP Interleukin-2 Homo sapiens (Human) P60568 N-[3‐[(2‐aminoethyl)disulfanyl]-1-oxopropyl]-tetrahydro-beta-carboline NCCSSCCC(=O)N1CCc2c(C1)[nH]c1ccccc21 MHC