Detailed Peptide Information
This page shows detailed information of individual peptides present in PlantPepDB database. The page is majorly divided into 3 sections. The first sections contains primary information like peptide activity, source, sequence, etc. In the secondary information section user can access the tertiary structure as well as the physico-chemical properties by clicking the respective links. Further there is also link of the source database and research article from which the peptide data is retrieved. Download the information by clicking
| Primary Information |
| PPepDB ID | PPepDB_3958 |
| Peptide Name | MJ-AMP1 |
| PMID(s) | 1733929, 7647302 |
| Plant Source (Scientific Name) | Mirabilis jalapa |
| Plant Source (Common Name) | Garden four-o'clock |
| Plant Family | Nyctaginaceae |
| Peptide Family | Knottin |
| Peptide Function | Antibacterial, Antifungal |
| Peptide Function Description | Shown to possess strong antifungal activity |
| Activity Against | Gram-positive bacteria: Bacillus megaterium (IC50= 6 µg/mL), Sarcina lutea (IC50= 100 µg/mL). NOTE! not active against Erwinia carotovora, Escherichia coli. Fungi: Alternaria brassicola (IC50= 20 µg/mL), Ascochyta pisi (IC50= 200 µg/mL), Botrytis cinerea (IC50= 50 µg/mL), Cercospora beticola (IC50= 10 µg/mL), Colletotrichum lindemuthianum (IC50= 5 µg/mL), Fusarium culmorum (IC50= 30 µg/mL), Fusarium oxysporum f. sp. Pisi (IC50= 15 µg/mL), Fusarium oxysporum f. sp. Lycopersici (IC50= 200 µg/mL), Nectria haematococca (IC50= 15 µg/mL), Phoma betae (IC50= 25 µg/mL), Pyrenophora tritici-repentis (IC50= 300 µg/mL), Pyricularia oryzae (IC50= 6 µg/mL), Rhizoctonia solani (IC50= 60 µg/mL), Verticiliium dahliae (IC50= 12 µg/mL), Venturia inaequalis (IC50= 12 µg/mL). |
| IC50 value | 6 µg/mL | 100 µg/mL | 20 µg/mL | 200 µg/mL | 50 µg/mL | 10 µg/mL | 5 µg/mL | 30 µg/mL | 15 µg/mL | 200 µg/mL | 15 µg/mL | 25 µg/mL | 300 µg/mL | 6 µg/mL | 60 µg/mL | 12 µg/mL | 12 µg/mL |
| Sequence | QCIGNGGRCNENVGPPYCCSGFCLRQPGQGYGYCKNR |
| Sequence Length | 37 |
| Validation | Experimental evidence at protein level |
| Average Molecular Weight (Da) | 4000.51 |
| Monoisotopic Molecular Weight (Da) | 3997.71 |
| Isoelectric Point (pI) | 8.66 |
| Method / Extraction | --NA-- |
| External links (Uniprot, PDB and Source Information Database) |
| Uniprot | P25403 |
| NCBI | 1703271 |
| EMBL | --NA-- |
| Link to Source Databases | PhytAMP_PHYT00270, CAMPSQ187, APD_00203 |
| Addtional Information | Three disulfide bonds.Transgenic plants: expression of this peptide in tomato enhances resistance to early blight disease (Planta. 2005 Nov;222(5):858-66). |