General Information
-
DRAMP ID
- DRAMP03124
-
Peptide Name
- Def-AcAA (hybrid defensins; Insects, animals)
-
Source
- Anopheles gambiae (African malaria mosquito)
-
Family
- Not found
-
Gene
- Not found
-
Sequence
- ATCDLASIFNVNHALCAAHCIARRYRGGYCNSKAVCVCRN
-
Sequence Length
- 40
-
UniProt Entry
- Q17027
-
Protein Existence
- Protein level
Activity Information
-
Biological Activity
- Antimicrobial, Antibacterial, Anti-Gram+
-
Target Organism
-
- Gram-positive bacteria: Staphylococcus aureus strain 21 (IC90=1.56 µg/mL), Staphylococcus aureus strain 4 (IC90=3.125 µg/mL).
- T1=100 mg/kg, T2>100 mg/kg.
- T1, dose causing the first signs of toxicity on mice. T2, lethal dose.
-
Hemolytic Activity
-
- No hemolysis information or data found in the reference(s) presented in this entry
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Cytotoxicity
-
- Not included yet
-
Binding Target
- Not found
Structure Information
-
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
- Combine helix and strand structure
-
Structure Description
- Global fold has a N-terminal loop L1, followed by a helix and a two-stranded antiparallel β-sheet forming the CSab motif.
-
Helical Wheel Diagram
-
PDB ID
- 2NZ3 resolved by NMR.
-
Predicted Structure
- There is no predicted structure for DRAMP03124.
Physicochemical Information
-
Formula
- C181H291N61O52S6
Absent Amino Acids
- EMPQW
Common Amino Acids
- A
Mass
- 4346.04
PI
- 8.94
Basic Residues
- 7
Acidic Residues
- 1
Hydrophobic Residues
- 15
Net Charge
- +6
-
Boman Index
- -62.47
Hydrophobicity
- 0.203
Aliphatic Index
- 78.25
Half Life
-
- Mammalian:4.4 hour
- Yeast:>20 hour
- E.coli:>10 hour
Extinction Coefficient Cystines
- 3355
Absorbance 280nm
- 86.03
Polar Residues
- 17
DRAMP03124
Comments Information
Function
- Among the five hybrid defensins tested, Def-AcAA appears to be more efficient than Def-AAA on the multi resistant and sensitive strains.
Literature Information
- ·Literature 1
-
Title
- Rational design of peptides active against the gram positive bacteria Staphylococcus aureus.
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Pubmed ID
- 18214975
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Reference
- Proteins. 2008 Jul;72(1):229-239.
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Author
- Landon C, Barbault F, Legrain M, Guenneugues M, Vovelle F.