• DRAMP ID

    • DRAMP18712
    • Peptide Name

    • Styelin A (Tunicate, invertebrates, animals)
    • Source

    • Styela clava (Sea squirt)
    • Family

    • Belongs to the Cecropins family.
    • Gene

    • Not found
    • Sequence

    • GFGKAFHSVSNFAKKHKTA
    • Sequence Length

    • 19
    • Protein Existence

    • Protein level
    • Biological Activity

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

      • [Ref.9467865] Gram positive bacteria: Listeria monocytogenes EGD (MIC=2 µg/ml), Staphylococcus aureus 930918-3 (MIC=6 µg/ml), Enterococcus faecalis 94.132 (MIC=2 µg/ml);
      • Gram-negative bacteria: Pseudomonas aeruginosa MR 3007 (MIC=4 µg/ml), Escherichia coli ML-35p (MIC=2.7 µg/ml), Salmonella typhimurium 14028S (MIC=5 µg/ml).
    • Hemolytic Activity

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

      • Not included yet
    • Binding Target

    • Not found
    • Linear/Cyclic

    • Not included yet
    • N-terminal Modification

    • Not included yet
    • C-terminal Modification

    • Not included yet
    • Nonterminal Modifications and Unusual Amino Acids

    • Not included yet
    • Stereochemistry

    • Not included yet
    • Structure

    • Helix
    • Structure Description

    • Not found
    • Helical Wheel Diagram

    • DRAMP18712 helical wheel diagram
    • PDB ID

    • None
    • Predicted Structure

    • Formula

    • C95H144N28O24
    • Absent Amino Acids

    • CDEILMPQRWY
    • Common Amino Acids

    • K
    • Mass

    • 2062.36
    • PI

    • 10.48
    • Basic Residues

    • 6
    • Acidic Residues

    • 0
    • Hydrophobic Residues

    • 7
    • Net Charge

    • +6
    • Boman Index

    • -2724
    • Hydrophobicity

    • -0.558
    • Aliphatic Index

    • 31.05
    • Half Life

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

    • 0
    • Absorbance 280nm

    • 0
    • Polar Residues

    • 6

DRAMP18712

DRAMP18712 chydropathy plot
    • Function

    • Bactericidal against several Gram-positive and Gram-negative bacteria.
    • Tissue specificity

    • Hemocytes and pharyngeal tissues.
  • ·Literature 1
    • Title

    • Styelins, broad-spectrum antimicrobial peptides from the solitary tunicate, Styela clava.
    • Reference

    • Comp. Biochem. Physiol. 1997; 118:515-521
    • Author

    • Lee IH, Cho Y, Lehrer RI.