P83476 (TXPR2_THRPR) Thrixopelma pruriens (Peruvian green velvet tarantula)

Beta/omega-theraphotoxin-Tp2a UniProtKBInterProInteractive Modelling

30 aa; Sequence (Fasta)

Sequence Features

 5Part of an aromatic-rich surface that anchors the toxin toward the membrane core relative to lipid headgroups bound along the pore module of Nav1.7/SCN9A.
 7Part of an aromatic-rich surface that anchors the toxin toward the membrane core relative to lipid headgroups bound along the pore module of Nav1.7/SCN9A.
 22Electrostatic gating-modifier of Nav1.7/SCN9A that antagonizes outward gating-charge movement through direct electrostatic repulsion; may also indirectly antagonize S4 gating-charge movement by neutralizing acidic side chains within the extracellular vestibule of VSD2.
 24Part of an aromatic-rich surface that anchors the toxin toward the membrane core relative to lipid headgroups bound along the pore module of Nav1.7/SCN9A; it also stabilizes the toxin for productive receptor site engagement.
 26Antagonizes outward gating-charge movement of Nav1.7/SCN9A through direct electrostatic repulsion; may also indirectly antagonize S4 gating-charge movement by neutralizing acidic side chains within the extracellular vestibule of VSD2.
 30Part of an aromatic-rich surface that anchors the toxin toward the membrane core relative to lipid headgroups bound along the pore module of Nav1.7/SCN9A.
 2-16
 9-21
 15-25

Sequence Alignments

Experimental structures

DescriptionOligo-stateLigandsStructureRangeDownloadAssess
Structural basis of Nav1.7 inhibition by a gating-modifier spider toxin Heteromer
16×6OU;6n4i1-30
'CryoEM structure of Nav1.7 VSD2 (actived state) in complex with the gating modifier toxin ProTx2' Heteromer
A8EVM5; Q15858;
6n4q1-30
'CryoEM structure of Nav1.7 VSD2 (deactived state) in complex with the gating modifier toxin ProTx2' Heteromer
A8EVM5; Q15858;
6n4r1-30
Crystal structure of tarantula venom peptide Protoxin-IImonomer EDO;CL;5o0u1-30
NMR solution structure of ProTx-IImonomer 2n9t1-30
Solution NMR structure of spider toxin analogue [E17K]ProTx-IImonomer 6mk41-30
NMR solution structure of engineered Protoxin-II analogmonomer 5tcz1-29