Peptide Information

General Information of This Peptide
Peptide ID
BTDP008414
Peptide Name
Kunitz-type serine protease inhibitor IX
Symonym
Bungarus fasciatus fraction IX; Venom basic protease inhibitor IX
Species
Bungarus fasciatus (Banded krait) (Pseudoboa fasciata)
Uniprot Name
VKT9_BUNFA
Alphafold ID
P25660
3D Structure
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2D Sequence
3D Structure
Source
RSCB PDB: 1JC6
Sequence
KNRPTFCNLLPETGRCNALIPAFYYNSHLHKCQKFNYGGCGGNANNFKTIDECQRTCAAK
YGRSS
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Sequence Length
65
Mass (Da)
7294
Sequence Removed Signal Peptide
KNRPTFCNLLPETGRCNALIPAFYYNSHLHKCQKFNYGGCGGNANNFKTIDECQRTCAAK
YGRSS
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Disulfide Bond
7-57;16-40;32-53
PDB ID
1JC6
        Click to Show/Hide the Complete Species Lineage
Kingdom: Metazoa
Phylum: Chordata
Class: Lepidosauria
Order: Squamata
Family: Elapidae
Genus: Bungarus
Species: Bungarus fasciatus
Full List of Activity Data of This Peptide Toxin
                        Target Name Activity Data Type Activity Data Concentration Note Reference
 Target Info    chymotrypsin Inhibition constant
18 nM
 . . [1], [2], [3]
 Target Info    Kv1.3 IC50
120 nM
 . . [1], [2], [3]
 Target Info    Kv1.3 IC50
120 nM
 . . [1], [2], [3]
References
Ref 1 Complete amino acid sequences of two protease inhibitors in the venom of Bungarus fasciatus. Int J Pept Protein Res. 1983 Feb;21(2):209-15. doi: 10.1111/j.1399-3011.1983.tb03095.x.
Ref 2 BF9, the first functionally characterized snake toxin peptide with Kunitz-type protease and potassium channel inhibiting properties. J Biochem Mol Toxicol. 2014 Feb;28(2):76-83. doi: 10.1002/jbt.21538. Epub 2013 Nov 14.
Ref 3 Solution structure of a Kunitz-type chymotrypsin inhibitor isolated from the elapid snake Bungarus fasciatus. J Biol Chem. 2001 Nov 30;276(48):45079-87. doi: 10.1074/jbc.M106182200. Epub 2001 Sep 18.
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