Mu-scoloptoxin(15)-Ssm1a

UniProtKB accession:  A0A2L0ART2

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Blocks voltage-gated potassium channels Kv7.4/KCNQ4 (IC(50)=2.5 uM), Kv7.1/KCNQ1 (IC(50)=2.8 uM), Kv7.2/KCNQ2 (IC(50)=2.7 uM) and Kv7.5/KCNQ5 (IC(50)=2.7 uM). Targets the pore domain, in particular negatively charged residues 'Asp-266' and 'Asp-288', of KCNQ4 and probably other KCNQ channel family members where these residues are conserved. In vivo, shows vasoconstrictive activity resulting in acute hypertension when injected intravenously in mice. Also induces coronary vasospasms ultimately leading to heart failure. Induces seizures when injected into the hippocampus of mice. Decreases respiratory rate while increasing respiratory amplitude, probably by triggering a contraction of the bronchial ring.