• DRAMP ID

    • DRAMP02811
    • Peptide Name

    • Defensin MGD-1 (molluscas, animals)
    • Source

    • Mytilus galloprovincialis (Mediterranean mussel)
    • Family

    • Not found
    • Gene

    • FH3
    • Sequence

    • GFGCPNNYQCHRHCKSIPGRCGGYCGGWHRLRCTCYRC
    • Sequence Length

    • 38
    • Protein Existence

    • Protein level
    • Biological Activity

    • Antimicrobial, Antibacterial, Anti-Gram+, Anti-Gram-
    • Target Organism

      • Gram-positive bacteria: Micrococcus luteus (MIC=0.4 µM)&(MBC=1.5 µM), Bacillus megaterium (MIC=0.8 µM)&(MBC=1.5 µM), Staphylococcus aureus (MIC=0.6 µM)&(MBC=1.2 µM), Staphylococcus epidermidis (MIC=3.1 µM)&(MBC=6.2 µM), Enterococcus fecalis (MIC=0.6 µM)&(MBC=1.2 µM), Aerococcus viridans (MIC=0.4 µM)&(MBC=1.5 µM);
      • Gram-negative bacteria: Escherichia coli D31 (MIC=1.2 µM)&(MBC=1.2 µM), E. coli 363 (MIC=1.2 µM)&(MBC=1.2 µM), Salmonella newport (MIC>100 µM)&(MBC>100 µM), Vibrio alginolyticus (MIC=50 µM)&(MBC>100 µM), Vibrio harveyi (MIC=50 µM)&(MBC=100 µM), Vibrio metshnikovii (MIC>100 µM)&(MBC>100 µM).
      • NOTE: MIC=minimal inhibitory concentration; MBC = minimal bactericidal concentration.
    • Hemolytic Activity

      • No hemolysis information or data found in the reference(s) presented in this entry
    • Cytotoxicity

    • No cytotoxicity information found in the reference(s) presented
    • Binding Target

    • Not found
    • Linear/Cyclic

    • Cyclic
    • N-terminal Modification

    • Free
    • C-terminal Modification

    • Free
    • Nonterminal Modifications and Unusual Amino Acids

    • Disulfide bond between Cys4 and Cys25, Cys10 and Cys33, Cys14 and Cys35,Cys21 and Cys38.
    • Stereochemistry

    • L
    • Structure

    • Combine helix and strand structure
    • Structure Description

    • The three-dimensional solution structure of MGD-1 has been established using (1)H NMR and mainly consists of a helical part (Asn7-Ser16) and two antiparallel beta-strands (Arg20-Cys25 and Cys33-Arg37), together giving rise to the common cystine-stabilized alpha-beta motif frequently observed in scorpion toxins. In MGD-1, the cystine-stabilized alpha-beta motif is stabilized by four disulfide bonds (Cys4-Cys25, Cys10-Cys33, Cys14-Cys35,
    • Helical Wheel Diagram

    • DRAMP02811 helical wheel diagram
    • PDB ID

    • 1FJN resolved by NMR.
  • 1FJN-> 
    • Predicted Structure

    • Formula

    • C181H270N64O47S8
    • Absent Amino Acids

    • ADEMV
    • Common Amino Acids

    • C
    • Mass

    • 4351.02
    • PI

    • 9.12
    • Basic Residues

    • 9
    • Acidic Residues

    • 0
    • Hydrophobic Residues

    • 4
    • Net Charge

    • +9
    • Boman Index

    • -87.37
    • Hydrophobicity

    • -0.729
    • Aliphatic Index

    • 20.53
    • Half Life

      • Mammalian:30 hour
      • Yeast:>20 hour
      • E.coli:>10 hour
    • Extinction Coefficient Cystines

    • 10470
    • Absorbance 280nm

    • 282.97
    • Polar Residues

    • 22

DRAMP02811

DRAMP02811 chydropathy plot
    • Function

    • Active against both Gram-positive and Gram-negative bacteria but is not cytotoxic towards human erythrocytes or protozoa.
    • Transgenic plants

    • expression of this peptide in tobacco improves resistance to pathogens.
    • PTM

    • Contains four disulfide bonds 4-25; 10-33; 14-35; 21-38.
  • ·Literature 1
    • Title

    • Mussel defensins are synthesised and processed in granulocytes then released into the plasma after bacterial challenge.
    • Reference

    • J. Cell Sci. 1999;112:4233-4242.
    • Author

    • Mitta G, Vandenbulcke F, Hubert F, Roch P.
  • ·Literature 2
    • Title

    • A member of the arthropod defensin family from edible Mediterranean mussels (Mytilus galloprovincialis).
    • Reference

    • Eur. J. Biochem. 1996;240:302-306.
    • Author

    • Hubert F, Noeel T, Roch P.
  • ·Literature 3
    • Title

    • Solution structure and activity of the synthetic four-disulfide bond Mediterranean mussel defensin (MGD-1).
    • Reference

    • Biochemistry 2000 Nov 28;39(47):14436-47.
    • Author

    • Yang YS, Mitta G, Chavanieu A, Calas B, Sanchez JF, Roch P, Aumelas A.