General Information
-
DRAMP ID
- DRAMP02936
-
Peptide Name
- Big defensin (crabs, Arthropods, animals)
-
Source
- Tachypleus tridentatus (Japanese horseshoe crab)
-
Family
- Belongs to the big defensin family
-
Gene
- Not found
-
Sequence
- NPLIPAIYIGATVGPSVWAYLVALVGAAAVTAANIRRASSDNHSCAGNRGWCRSKCFRHEYVDTYYSAVCGRYFCCRSR
-
Sequence Length
- 79
-
UniProt Entry
- P80957
-
Protein Existence
- Protein level
Activity Information
-
Biological Activity
- Antimicrobial, Antibacterial, Antifungal, Anti-Gram+, Anti-Gram-
-
Target Organism
-
- Gram-negative bacteria: Escherichia coli 09:K39 (IC50=5 µg/ml), Salmonella typhimurium LT2 (IC50=20 µg/ml), S. minnesota R595 (IC50=1.3 µg/ml), Klebsiella pneumoniae (IC50>10 µg/ml);
- Gram-positive bacteria: Staphylococcus aureus (IC50<2.5 µg/ml).
- Yeast: Candida albicans (IC50>20 µg/ml)(Ref.1).
- Note: Washed with a phosphate buffered saline (PBS, pH 7.0).
-
Hemolytic Activity
-
- No hemolysis information or data found in the reference(s) presented in this entry
-
Cytotoxicity
-
- Not included yet
-
Binding Target
- Lipopolysaccharide (LPS)-binding
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
- Not found
-
Helical Wheel Diagram
-
PDB ID
- 2RNG resolved by NMR.
- 2RNG-> 
-
Predicted Structure
- There is no predicted structure for DRAMP02936.
Physicochemical Information
-
Formula
- C380H582N114O106S6
Absent Amino Acids
- MQ
Common Amino Acids
- A
Mass
- 8635.86
PI
- 9.27
Basic Residues
- 11
Acidic Residues
- 3
Hydrophobic Residues
- 30
Net Charge
- +8
-
Boman Index
- -109.01
Hydrophobicity
- 0.072
Aliphatic Index
- 75.44
Half Life
-
- Mammalian:1.4 hour
- Yeast:3 min
- E.coli:>10 hour
Extinction Coefficient Cystines
- 20315
Absorbance 280nm
- 260.45
Polar Residues
- 32
DRAMP02936
Comments Information
Function
- Significantly inhibits the growth of Gram-negative and Gram-positive bacteria and fungi in vitro.
Tissue specificity
- Expressed in all tissues examined, including hemocytes, heart, hepatopancreas, stomach, intestine and skeletal muscle.
PTM
- Contains three disulfide bonds.
Literature Information
- ·Literature 1
-
Title
- A novel big defensin identified in horseshoe crab hemocytes: isolation, amino acid sequence, and antibacterial activity.
-
Pubmed ID
- 8586631
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Reference
- J Biochem. 1995 May;117(5):1131-1137.
-
Author
- Saito T, Kawabata S, Shigenaga T, Takayenoki Y, Cho J, Nakajima H, Hirata M, Iwanaga S.
- ·Literature 2
-
Title
- A novel beta-defensin structure: a potential strategy of big defensin for overcoming resistance by Gram-positive bacteria.
-
Pubmed ID
- 18785751
-
Reference
- Biochemistry. 2008 Oct 7;47(40):10611-9.
-
Author
- Kouno T, Fujitani N, Mizuguchi M, Osaki T, Nishimura S, Kawabata S, Aizawa T, Demura M, Nitta K, Kawano K.