General Information
-
DRAMP ID
- DRAMP02643
-
Peptide Name
- Rhesus theta-defensin 2 (RTD-2; primates, mammals, animals)
-
Source
- Macaca mulatta (Rhesus macaque)
-
Family
- Belongs to the alpha-defensin family (Theta subfamily)
-
Gene
- Not found
-
Sequence
- RCLCRRGVCRCLCRRGVC
-
Sequence Length
- 18
-
UniProt Entry
- P82271
-
Protein Existence
- Protein level
Activity Information
-
Biological Activity
- Antimicrobial, Antibacterial, Antifungal, Anti-Gram+, Anti-Gram-
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Target Organism
-
- Gram-positive bacteria: Staphylococcus aureus 502a, Listeria monocytogenes;
- Gram-negative bacteria: Salmonella typhimurium, Escherichia coli ML35.
- Fungi: Candida albicans 16820, Cryptococcus neoformans 271A (the activity of RTD-2 against Escherichia coli ML35 was 2-3-fold less than those of RTD-1 and RTD-3).
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Hemolytic Activity
-
- No hemolysis information or data found in the reference(s) presented in this entry
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Cytotoxicity
-
- Not included yet
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Binding Target
- Not found
Structure Information
-
Linear/Cyclic
- Not included yet
-
N-terminal Modification
- Not included yet
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C-terminal Modification
- Not included yet
-
Nonterminal Modifications and Unusual Amino Acids
- Not included yet
-
Stereochemistry
- Not included yet
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Structure
- Bridge
-
Structure Description
- Not found
-
Helical Wheel Diagram
-
PDB ID
- None
-
Predicted Structure
- There is no predicted structure for DRAMP02643.
Physicochemical Information
-
Formula
- C80H150N36O19S6
Absent Amino Acids
- ADEFHIKMNPQSTWY
Common Amino Acids
- CR
Mass
- 2112.66
PI
- 9.69
Basic Residues
- 6
Acidic Residues
- 0
Hydrophobic Residues
- 4
Net Charge
- +6
-
Boman Index
- -62.04
Hydrophobicity
- 0.178
Aliphatic Index
- 75.56
Half Life
-
- Mammalian:1 hour
- Yeast:2 min
- E.coli:2 min
Extinction Coefficient Cystines
- 375
Absorbance 280nm
- 22.06
Polar Residues
- 8
DRAMP02643
Comments Information
Function
- RTD-1 and RTD-2 have similar antimicrobial activities against the Gram-positive bacteria S. aureus 502A and L. monocytogenes, the Gram-negative bacterium S. typhimurium, and the fungi C. albicans 16820 and C. neoformans 271A. RTD-2 is 2-3-fold less active than RTD-1 against E. coli ML35.
Subunit structure
- RTD-2 is a cyclic homodimer composed of two subunits B; disulfide-linked.
PTM
- Forms a cyclic peptide with 1 subunit B (RTD-2) or with 1 subunit A (RTD-1). An additional intersubunit disulfide bond is formed.
Miscellaneous
- RTD-1 is 10-fold more present in cells than RTD-2.
Literature Information
- ·Literature 1
-
Title
- A cyclic antimicrobial peptide produced in primate leukocytes by the ligation of two truncated alpha-defensins.
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Pubmed ID
- 10521339
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Reference
- Science. 1999 Oct 15;286(5439):498-502.
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Author
- Tang YQ, Yuan J, Osapay G, Osapay K, Tran D, Miller CJ, Ouellette AJ, Selsted ME.
- ·Literature 2
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Title
- Circular minidefensins and posttranslational generation of molecular diversity.
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Pubmed ID
- 1152799
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Reference
- J Leukoc Biol. 2001 Sep;70(3):461-464.
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Author
- Leonova L, Kokryakov VN, Aleshina G, Hong T, Nguyen T, Zhao C, Waring AJ, Lehrer RI.
- ·Literature 3
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Title
- Homodimeric theta-defensins from rhesus macaque leukocytes: isolation, synthesis, antimicrobial activities, and bacterial binding properties of the cyclic peptides.
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Pubmed ID
- 11675394
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Reference
- J Biol Chem. 2002 Feb 1;277(5):3079-3084.
-
Author
- Tran D, Tran PA, Tang YQ, Yuan J, Cole T, Selsted ME.