| IED ID | IndEnz0002012421 |
| Enzyme Type ID | protease012421 |
| Protein Name |
Kunitz-type serine protease inhibitor LmKTT-1a Delta-KTx 2.1 SdPII |
| Gene Name | |
| Organism | Lychas mucronatus (Chinese swimming scorpion) |
| Taxonomic Lineage | cellular organisms Eukaryota Opisthokonta Metazoa Eumetazoa Bilateria Protostomia Ecdysozoa Panarthropoda Arthropoda Chelicerata Arachnida Scorpiones Buthida Buthoidea Buthidae Lychas (bark scorpions) Lychas mucronatus (Chinese swimming scorpion) |
| Enzyme Sequence | MKSFLLIALVLFFLFVSYASAKKKCQLPSDVGKGKASFTRYYYNEESGKCETFIYGGVGGNSNNFLTKEDCCRECAQGSC |
| Enzyme Length | 80 |
| Uniprot Accession Number | P0DJ46 |
| Absorption | |
| Active Site | |
| Activity Regulation | |
| Binding Site | |
| Calcium Binding | |
| catalytic Activity | |
| DNA Binding | |
| EC Number | |
| Enzyme Function | FUNCTION: Dual-function toxin that completely inhibits trypsin activity at a molar ratio of 1:1 (Ki=140 nM) and that inhibits mKv1.3/KCNA3 potassium channel currents (1 uM inhibits 50% of currents) (IC(50)=1.58 uM). Shows also weak inhibition on Kv1.1/KCNA1 (1 uM inhibits 25% of currents) and Kv1.2/KCNA2 (1 uM inhibits 25% of currents). {ECO:0000269|PubMed:22087336, ECO:0000269|PubMed:22354971}. |
| Temperature Dependency | |
| PH Dependency | |
| Pathway | |
| nucleotide Binding | |
| Features | Beta strand (2); Chain (1); Disulfide bond (3); Domain (1); Helix (1); Mutagenesis (2); Signal peptide (1); Site (1); Turn (1) |
| Keywords | 3D-structure;Disulfide bond;Ion channel impairing toxin;Potassium channel impairing toxin;Protease inhibitor;Secreted;Serine protease inhibitor;Signal;Toxin;Voltage-gated potassium channel impairing toxin |
| Interact With | |
| Induction | |
| Subcellular Location | SUBCELLULAR LOCATION: Secreted {ECO:0000250}. |
| Modified Residue | |
| Post Translational Modification | PTM: Lacks the conserved CysII-CysIV disulfide bond but contains 2 cysteine residues at the C-terminus that generate a new disulfide bond. |
| Signal Peptide | SIGNAL 1..21; /evidence=ECO:0000255 |
| Structure 3D | NMR spectroscopy (1) |
| Cross Reference PDB | 2M01; |
| Mapped Pubmed ID | - |
| Motif | |
| Gene Encoded By | |
| Mass | 8,864 |
| Kinetics | |
| Metal Binding | |
| Rhea ID | |
| Cross Reference Brenda |