Latrunculin A

Supplier: Cayman Chemical

Latrunculin A is a bioactive 2-thiazolidinone macrolide derived from sponges that sequesters G-actin and prevents F-actin assembly. It binds monomeric actin with 1:1 stoichiometry and can be used to block actin polymerization both in vitro (K_d = 0,2 μM) and in cells (0,5 μM, 30 min).

Supplier: Abcam

Actin polymerization inhibitor. Potent antiproliferative agent. Stabilizes monomeric G-actin. Shows greater potency than Latrunculin B. Binds actin monomers near the nucleotide binding cleft with 1:1 stoichiometry. Inhibits growth of cancer cell lines (IC₅₀ values are 142, 142, 142, 166 and 95 nM for A549, H522-T1, HT-29, U-937 and MDA-MB-43 cells respectively). Shows convulsant effects in vivo.