Potassium channel toxin alpha-KTx 6.3

UniProtKB accession:  P59867

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UniProtKB description:  Potently blocks voltage-gated potassium channels Kv1.1/KCNA1 (IC(50)=7-11 nM) and Kv1.3/KCNA3 (IC(50)=11-29 pM) (PubMed:9359871, PubMed:24676092, PubMed:15498765). Also mildly blocks intermediate (IK) conductance calcium-activated potassium channels (KCa3.1/KCNN4) and ERG1/Kv11.1/KCNH2 (PubMed:18687312, PubMed:15498765). Shows ability to suppress proliferation of lymphocytes, which are known to be sensitive to Kv1.3/KCNA3 homotetrameric channel block (PubMed:24676092).