Malformin A

Malformin A is a cyclopentapeptide fungal metabolite that has been found in A. niger and has diverse biological activities. It is a plant growth regulator that induces malformations in plant structure. Malformin A inhibits replication of tobacco mosaic virus (TMV) in local lesion and leaf-disc assays (IC50s = 19.7 and 45.4 µg/ml, respectively). It is cytotoxic to NCI-H460, MIA PaCa-2, MCF-7, SF-268, and WI-38 cancer cells (IC50s = 70, 50, 100, 70, and 100 nM, respectively), inhibits proliferation of PC3 and LNCaP cells (IC50s = 130 and 90 nM, respectively), and induces apoptosis and necrosis in PC3 and LNCaP cells. Malformin A also increases the accumulation of reactive oxygen species, decreases the mitochondrial membrane potential, and induces autophagy in PC3 and LNCaP cells. It is toxic to mice when administered intraperitoneally (LD50 = 3.1 mg/kg) but not orally up to doses of 50 mg/kg.Formal Name: cyclo(D-cysteinyl-D-cysteinyl-L-valyl-D-leucyl-L-isoleucyl), cyclic (1->2)-disulfide. CAS Number: 3022-92-2. Synonyms: Malformin A1. Molecular Formula: C23H39N5O5S2. Formula Weight: 529.7. Purity: >95%. Formulation: (Request formulation change), A solid. Solubility: DMSO: 1 mg/ml. SMILES: O=C1[C@@]([C@@H](C)CC)([H])NC([C@@H](CC(C)C)NC([C@H](C(C)C)NC([C@@H]2NC([C@@H](CSSC2)N1)=O)=O)=O)=O. InChi Code: InChI=1S/C23H39N5O5S2/c1-7-13(6)18-23(33)26-15-9-34-35-10-16(25-20(15)30)21(31)27-17(12(4)5)22(32)24-14(8-11(2)3)19(29)28-18/h11-18H,7-10H2,1-6H3,(H,24,32)(H,25,30)(H,26,33)(H,27,31)(H,28,29)/t13-,14+,15+,16+,17-,18-/m0/s1. InChi Key: RNCGDQLZIATDOU-ZDRBWGSPSA-N. Origin: Synthetic.