| Bioactivity | Margatoxin, an alpha-KTx scorpion toxin, is a high affinity inhibitor of Kv1.3 (Kd=11.7 pM). Margatoxin inhibits the Kv1.2 (Kd=6.4 pM) and Kv1.1 (Kd=4.2 nM). Margatoxin, a 39 amino-acid-long peptide, is isolated from the venom of the scorpion Centruroides margaritatus and widely used in ion channel research[1][2]. | ||||||
| Name | Margatoxin | ||||||
| CAS | 145808-47-5 | ||||||
| Sequence | Thr-Ile-Ile-Asn-Val-Lys-Cys-Thr-Ser-Pro-Lys-Gln-Cys-Leu-Pro-Pro-Cys-Lys-Ala-Gln-Phe-Gly-Gln-Ser-Ala-Gly-Ala-Lys-Cys-Met-Asn-Gly-Lys-Cys-Lys-Cys-Tyr-Pro-His (Disulfide bridge:Cys7-Cys29;Cys13-Cys34;Cys17-Cys36) | ||||||
| Shortening | TIINVKCTSPKQCLPPCKAQFGQSAGAKCMNGKCKCYPH(Disulfide bridge:Cys7-Cys29;Cys13-Cys34;Cys17-Cys36) | ||||||
| Formula | C178H286N52O50S7 | ||||||
| Molar Mass | 4178.95 | ||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||
| Storage | Sealed storage, away from moisture and light, under nitrogen
*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen) |