protoxin II   Click here for help

GtoPdb Ligand ID: 7571

Synonyms: β/ω-theraphotoxin-Tp2a | β/ω-TRTX-Tp2a | protoxin-2 | ProTx-2 | ProTx-II | ProTx2 | PT-II
Compound class: Peptide
Comment: Toxin from Thrixopelma pruriens (Peruvian green velvet tarantula).
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
Selectivity at ion channels
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
Nav1.2 Hs Gating inhibitor Voltage-dependent inhibition 7.4 pKi - 2
⤷ pKi 7.4 [2]
Voltage: -100.0 mV
Description: Whole cell voltage clamp of transfected human embryonic kidney cells (HEK293)
Conditions: Holding potential of -100 mV, approximatley the voltage for half-maximal inactivation
Nav1.5 Hs Gating inhibitor Voltage-dependent inhibition 6.5 pKi - 1
⤷ pKi 6.5 [1]
Voltage: -80.0 mV
Description: Whole-cell voltage clamp of human Nav1.5 channels expressed in human embryonic kidney cells (HEK293).
Conditions: Holding potential of -80 mV.