Basic Information

IDDRAMP21336
SequenceSFLTTVKKLVTNLAAL
Length16
NameRPb (Frogs, amphibians, animals)
Sourcesynthetic construct
ActivityAntimicrobial, Antibacterial, Anti-Gram+, Anti-Gram-, Antifungal
Pathogen[Ref.31242693] Gram-positive bacteria:Staphylococcus aureus (MIC=8 μM; MBC=8 μM), MRSA (MIC=16 μM; MBC=32 μM), Enterococcus faecalis (MIC=32 μM; MBC=128 μM);##Gram-negative bacteria: Escherichia coli (MIC=16 μM; MBC=16 μM), Pseudomonas aeruginosa (MIC=64 μM; MBC=256 μM);##Fungi: Candida albicans (MIC=16 μM; MBC=16 μM)
Hemolytic Activity[Ref.31242693] 7% hemolysis at 16 μM, 18% hemolysis at 32 μM, 20% hemolysis at 64 μM, 40% hemolysis at 128 μM, 70% hemolysis at 256 μM, 100% hemolysis at 512 μM on horse erythrocytes.
Cytotoxicity[Ref.31242693] RPb only possessed inhibitory effect on the proliferation of H157 with the IC value of 6.856 μM, while showed no inhibitory effect on the proliferation of MCF-7, U251MG, PC-3 and MDA-MB-435s. DETAILED DATA: ①The cell viabillity of NCI-H157 induced by RPb is 98.7%, 102.5%, 96.9%, 98.1%, 38.1%, 9.4% at peptide concentrations of 0.001, 0.01, 0.1, 1, 10, 100 μM, while the cell viability induced by Melittin is 100%, 95%, 89.4%, 41.2%, 16.2% and 16.2% at 0.001, 0.01, 0.1, 1, 10, 100 μM. ②The cell viability of MCF-7 induced by RPb is 100.6%, 92.5%, 90%, 99.4%, 36.2% and 11.2% at peptide concentrations of 0.001, 0.01, 0.1, 1, 10, 100 μM, , while the cell viability induced by Melittin is 100%, 98.1%, 92.5%, 7.5%, 8.7% and 8.7% at 0.001, 0.01, 0.1, 1, 10, 100 μM. ③The cell viability of U251-MG induced by RPb is 105%, 103.1%, 109.4%, 102.5%, 105.6% and 13.1% at peptide concentrations of 0.001, 0.01, 0.1, 1, 10, 100 μM, while the cell viability induced by Melittin is 99.4%, 99.4%, 75.6%, 18.7%, 11.9% and 18.1% at 0.001, 0.01, 0.1, 1, 10, 100 μM.④The cell viability of PC-3 induced by RPa is 108.8%, 103.8%, 118.1%, 125.6%, 116.9% and 68.8% at peptide concentrations of 0.001, 0.01, 0.1, 1, 10, 100 μM, while the cell viability induced by Melittin is 110%, 113.1%, 109.4%, 33.1%, 16.9% and 16.2% at 0.001, 0.01, 0.1, 1, 10, 100 μM. ⑤The cell viability of MDA-MB-435S induced by RPa is 98.1%, 95%, 100.6%, 97.5%, 80.6% and 43.1%, while the cell viability induced by Melittin is 100%, 93.1%, 82.5%, 18.8%, 18.8% and 18.1%.
N-terminal ModificationFree
C-terminal ModificationAmidation
Linear/Cyclic/BranchedLinear
Uniprot
PDB
3D View
PDB DownloadDownload PDB Predicted by Alphafold2
PubMed ID31242693

Physicochemical Properties

Residues16
SequenceSFLTTVKKLVTNLAAL
Molecular Weight1719.074
Grand Average of Hydropathy0.988
Isoelectric Point10.001
Charge at pH 7.41.248
Secondary StructureHelix: 0.438, Turn: 0.125, Sheet: 0.375
Instability Index-12.431
Aromaticity0.062

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