PPIRE04935
Target Protein Information
| Protein_Name | Periplasmic oligopeptide-binding protein OppA |
|---|---|
| Protein_Sequence | MTNITKRSLVAAGVLAALMAGNVALAADVPAGVTLAEKQTLVRNNGSEVQSLDPHKIEGVPESNISRDLFEGLLVSDLDGHPAPGVAESWDNKDAKVWTFHLRKDAKWSDGTPVTAQDFVYSWQRSVDPNTASPYASYLQYGHIAGIDEILEGKKPITDLGVKAIDDHTLEVTLSEPVPYFYKLLVHPSTSPVPKAAIEKFGEKWTQPGNIVTNGAYTLKDWVVNERIVLERSPTYWNNAKTVINQVTYLPIASEVTDVNRYRSGEIDMTNNSMPIELFQKLKKEIPDEVHVDPYLCTYYYEINNQKPPFNDVRVRTALKLGMDRDIIVNKVKAQGNMPAYGYTPPYTDGAKLTQPEWFGWSQEKRNEEAKKLLAEAGYTADKPLTINLLYNTSDLHKKLAIAASSLWKKNIGVNVKLVNQEWKTFLDTRHQGTFDVARAGWCADYNEPTSFLNTMLSNSSMNTAHYKSPAFDSIMAETLKVTDEAQRTALYTKAEQQLDKDSAIVPVYYYVNARLVKPWVGGYTGKDPLDNTYTRNMYIVKH |
| Organism_Source | Escherichia coli (strain K12) |
| Functional_Classification | ATP-binding cassette (ABC) transporter substrate-binding protein (SBP) |
| Cellular_Localization | Extracellular |
| Gene_Names | oppA |
| UniProt_ID | P23843 |
| Protein-Protein Interaction Networks | |
Peptide Basic Information
| Peptide_Name | KGGK |
|---|---|
| Peptide_Sequence | KGGK |
| Peptide_Length | 4 |
| Peptide_SMILES | NCCCC[C@H](NC(=O)CNC(=O)CNC(=O)[C@@H](N)CCCCN)C(=O)O |
| Chemical_Modification | None |
| Cyclization_Method | None |
| Linear/Cyclic | Linear |
| N-terminal_Modification | Free |
| C-terminal_Modification | Free |
| Amino_Acid_Distribution | |
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Peptide Physicochemical
| Molecular_Weight | 388.47 |
|---|---|
| Aliphatic_Index | 0.00000 |
| Aromaticity | 0.00000 |
| Average_Rotatable_Bonds | 3.75000 |
| Charge_at_pH_7 | 1.99739 |
| Isoelectric_Point | 10.80538 |
|---|---|
| Number_of_Hydrogen_Bond_Acceptors | 7 |
| Number_of_Hydrogen_Bond_Donors | 7 |
| Topological_Polar_Surface_Area | 202.66000 |
| X_logP_energy | -2.62650 |
Interaction Information
| Affinity | KD=0.43 uM |
|---|---|
| Affinity_Assay | Isothermal titration calorimetry |
| PDB_ID | None |
| Type | Affinity ligand |
| Structure | |
Reference Information
| Document_Type | Research Articles |
|---|---|
| Title | Escherichia coli peptide binding protein OppA has a preference for positively charged peptides. |
| Release_Year | 2011 |
| PMID | 21983341 |
| DOI | 10.1016/j.jmb.2011.09.043 |