• DRAMP ID

    • DRAMP02739
    • Peptide Name

    • TEWP (turtle egg-white protein; Reptiles, animals)
    • Source

    • Caretta caretta (Loggerhead turtle)
    • Family

    • Not found
    • Gene

    • Not found
    • Sequence

    • EKKCPGRCTLKCGKHERPTLPYNCGKYICCVPVKVK
    • Sequence Length

    • 36
    • UniProt Entry

    • No entry found
    • Protein Existence

    • Not found
    • Biological Activity

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

      • Gram-negative bacteria: Escherichia coli (IC50=2.3 µM), Salmonella typhimurium (IC50=2.8 µM);
      • Gram-positive bacterium: Staphylococcus aureus (IC50=5.1 µM).
      • Virus: enveloped rhabdovirus, Chandipura virus, Vesicular stomatitis virus.
    • 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

    • Beta strand (2 strands; 2 residues)
    • Structure Description

    • The protein has no α-helix and consists of two antiparallel β-sheets.
    • Helical Wheel Diagram

    • DRAMP02739 helical wheel diagram
    • PDB ID

    • 2B5B resolved by NMR.
  • 2B5B-> 
    • Predicted Structure

    • There is no predicted structure for DRAMP02739.
    • Formula

    • C177H296N52O46S6
    • Absent Amino Acids

    • ADFMQSW
    • Common Amino Acids

    • K
    • Mass

    • 4080.98
    • PI

    • 9.39
    • Basic Residues

    • 10
    • Acidic Residues

    • 2
    • Hydrophobic Residues

    • 6
    • Net Charge

    • +8
    • Boman Index

    • -61.65
    • Hydrophobicity

    • -0.608
    • Aliphatic Index

    • 56.67
    • Half Life

      • Mammalian:1 hour
      • Yeast:30 min
      • E.coli:>10 hour
    • Extinction Coefficient Cystines

    • 3355
    • Absorbance 280nm

    • 95.86
    • Polar Residues

    • 14

DRAMP02739

DRAMP02739 chydropathy plot
    • Function

    • The protein showes strong antibacterial activity against Escherichia coli and Salmonella typhimurium. The protein also showes significant antiviral activity against an enveloped rhabdovirus, Chandipura virus,
  • ·Literature 1
    • Title

    • Small cationic protein from a marine turtle has beta-defensin-like fold and antibacterial and antiviral activity.
    • Reference

    • Proteins. 2006 Aug 1;64(2):524-531.
    • Author

    • Chattopadhyay S, Sinha NK, Banerjee S, Roy D, Chattopadhyay D, Roy S.