Potassium channel toxin alpha-KTx 6.21

UniProtKB accession:  P0DL37

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UniProtKB description:  Reversible blocker of voltage-gated potassium channels with fast binding and unbinding kinetics (PubMed:24723491, PubMed:31881193). Has highest activity on human voltage-gated potassium channel Kv1.2/KCNA2 channels (IC(50)=0.11-0.16 nM), whereas its affinity for other channels tested was in the nanomolar range (hKv1.1/KCNA1, IC(50)=253 nM; hKv1.3/KCNA3, IC(50)=91 nM; and hKCa3.1/KCNN4, IC(50)=70 nM) (PubMed:24723491, PubMed:31881193).