PPIRE14964

Target Protein Information
Protein_Name Calcium-activated potassium channel slowpoke
Protein_Sequence MASGLIDTNFSSTLANGMSGCDQSTVESLADDPTDSPFDADDCLKVRKYWCFLLSSIFTFLAGLLVVLLWRAFAFVCCRKEPDLGPNDPKQKEQKASRNKQEFEGTFMTEAKDWAGELISGQTTTGRILVVLVFILSIASLIIYFVDASSEEVERCQKWSNNITQQIDLAFNIFFMVYFFIRFIAASDKLWFMLEMYSFVDYFTIPPSFVSIYLDRTWIGLRFLRALRLMTVPDILQYLNVLKTSSSIRLAQLVSIFISVWLTAAGIIHLLENSGDPLDFNNAHRLSYWTCVYFLIVTMSTVGYGDVYCETVLGRTFLVFFLLVGLAMFASSIPEIIELVGSGNKYGGELKREHGKRHIVVCGHITYESVSHFLKDFLHEDREDVDVEVVFLHRKPPDLELEGLFKRHFTTVEFFQGTIMNPIDLQRVKVHEADACLVLANKYCQDPDAEDAANIMRVISIKNYSDDIRVIIQLMQYHNKAYLLNIPSWDWKQGDDVICLAELKLGFIAQSCLAPGFSTMMANLFAMRSFKTSPDMQSWTNDYLRGTGMEMYTETLSPTFIGIPFAQATELCFSKLKLLLLAIEIKGAEEGADSKISINPRGAKIQANTQGFFIAQSADEVKRAWFYCKACHEDIKDETLIKKCKCKNLTVQPRSKFDDLDEHHPAPTFTPPELPKRVHVRGSVSGDITRDREDTNLLNRNVRRPNGTGNGTGGMHHMNNTAAAAAAAAAAGKQVNKVKPTVNVSRQVEGQVISPSQYNRPTSRSSGTGTQNQNGGVSLPAGIADDQSKDFDFEKTEMKYDSTGMFHWSPAKSLEDCILDRNQAAMTVLNGHVVVCLFADPDSPLIGLRNLVMPLRASNFHYHELKHVVIVGSVDYIRREWKMLQNLPKISVLNGSPLSRADLRAVNVNLCDMCCILSAKVPSNDDPTLADKEAILASLNIKAMTFDDTIGVLSQRGPEFDNLSATAGSPIVLQRRGSVYGANVPMITELVNDSNVQFLDQDDDDDPDTELYLTQPFACGTAFAVSVLDSLMSTTYFNQNALTLIRSLITGGATPELELILAEGAGLRGGYSTVESLSNRDRCRVGQISLYDGPLAQFGECGKYGDLFVAALKSYGMLCIGLYRFRDTSSSCDASSKRYVITNPPDDFSLLPTDQVFVLMQFDPGLEYKPPAVRAPAGGRGTNTQGSGVGGGGSNKDDNS
Organism_Source Drosophila melanogaster
Functional_Classification large-conductance Ca2?-activated K? channel
Cellular_Localization Plasma membrane
Gene_Names slo
UniProt_ID Q03720
Protein-Protein Interaction Networks
Peptide Basic Information
Peptide_Name alpha-TRTX-Ec2b
Peptide_Sequence NVCTKDLTCWDGNSHPGGKCQSGGFKGCS
Peptide_Length 29
Peptide_SMILES CC(C)C[C@H](NC(=O)[C@H](CC(=O)O)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CS)NC(=O)[C@@H](NC(=O)[C@@H](N)CC(N)=O)C(C)C)[C@@H](C)O)C(=O)N[C@H](C(=O)N[C@@H](CS)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](CC(=O)O)C(=O)NCC(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(=O)N[C@@H](Cc1c[nH]cn1)C(=O)N1CCC[C@H]1C(=O)NCC(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CS)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CO)C(=O)NCC(=O)NCC(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](CCCCN)C(=O)NCC(=O)N[C@@H](CS)C(=O)N[C@@H](CO)C(=O)O)[C@@H](C)O
Chemical_Modification None
Cyclization_Method Side chain-side chain cyclization; C1<->C4; disulfide bond
Linear/Cyclic Cyclic
N-terminal_Modification Free
C-terminal_Modification Free
Amino_Acid_Distribution
Peptide Physicochemical
Molecular_Weight 2987.30
Aliphatic_Index 23.44828
Aromaticity 0.06897
Average_Rotatable_Bonds 3.34483
Charge_at_pH_7 0.84100
Isoelectric_Point 7.93385
Number_of_Hydrogen_Bond_Acceptors 48
Number_of_Hydrogen_Bond_Donors 48
Topological_Polar_Surface_Area 1296.88000
X_logP_energy -20.28770
Interaction Information
Affinity IC50=25.3 nM
Affinity_Assay whole-cell patch-clamp electrophysiology
PDB_ID None
Type Ion channel modulator
Structure
Reference Information
Document_Type Research Articles
Title A novel family of insect-selective peptide neurotoxins targeting insect large-conductance calcium-activated K+ channels isolated from the venom of the theraphosid spider Eucratoscelus constrictus.
Release_Year 2011
PMID 21447641
DOI 10.1124/mol.110.070540