• • DRAMP ID

  • DRAMP21336

• • Peptide Name

  • RPb (Frogs, amphibians, animals)

• • Source

  • synthetic construct

• • Family

  • Not found

• • Gene

  • Not found

• • Sequence

  • SFLTTVKKLVTNLAAL

• • Sequence Length

  • 16

• • UniProt Entry

  • No entry found

• • Protein Existence

  • Synthetic form

• • Biological Activity

  • Antimicrobial, Antibacterial, Anti-Gram+, Anti-Gram-, Antifungal

• • Target Organism

  • • [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%.

• • Binding Target

  • Not found

• • Linear/Cyclic

  • Linear

• • N-terminal Modification

  • Free

• • C-terminal Modification

  • Amidation

• • Nonterminal Modifications and Unusual Amino Acids

  • None

• • Stereochemistry

  • L

• • Structure

  • 49.6% Helix, 7.6% antiparallel, 0% parallel, 9.8% turn and 33% others in 50% TFE/H2O. ##0.3% Helix, 25.4% antiparallel, 0% parallel, 19.4% turn and 55

• • Structure Description

  • Not found

• • Helical Wheel Diagram

  • 

• • PDB ID

  • None

• Predicted Structure

• There is no predicted structure for DRAMP21336.

DRAMP21336

• • Function

  • Antibacterial activity against Gram-positive bacteria and Gram-negative bacteria. Antifungal activity against Candida albicans.

• ·Literature 1

• • Title

  • Bioevaluation of Ranatuerin-2Pb from the Frog Skin Secretion of Rana pipiens and its Truncated Analogues

• • Pubmed ID

  • 31242693

• • Reference

  • Biomolecules. 2019 Jun 25;9(6):249. doi: 10.3390/biom9060249.

• • Author

  • Zhou, XW; Shi, DN; Zhong, RM; Ye, ZM; Ma, CB; Zhou, M; Xi, XP; Wang, L; Chen, TB; Kwok, HF