Mu-theraphotoxin-Tp1a

UniProtKB accession:  P0DL64

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UniProtKB description:  Inhibits voltage-gated sodium channels without significantly altering the voltage dependence of activation or inactivation. The toxin preferentially inhibits hNav1.7/SCN9A (IC(50)=2.1 nM) > hNav1.6/SCN8A > hNav1.2/SCN2A > hNav1.1/SCN1A > hNav1.3/SCN3A channels in fluorescent assays. The toxin exhibits analgesic properties by reversing spontaneous pain induced in mice by intraplantar injection with OD1 (AC P84646), a scorpion toxin that potentiates hNav1.7/SCN9A.