钙调蛋白拮抗剂,Ophiobolin B 是一种 Helminthosporium oryzae 的二倍半萜类化合物 (sesterterpene) 的代谢产物,抑制玉米胚芽鞘的质子挤出。Ophiobolin B 抑制壳梭孢素 (FC) 促进的质子挤出,钾的摄取和细胞增大。Ophiobolins B 对不同接合菌的抗真菌作用的 MIC 值为 25-50 μg/mL。
OPHIOBOLIN B;3,14-Dihydroxy-5-oxoophiobola-7,19-dien-25-al;Cochliobolin B
Cas No.
5601-74-1
分子式
C29H40N2O11
分子量
592.63
包装储存
Powder
-20°C
3 years
In solvent
-80°C
6 months
-20°C
1 month
生物活性
Ophiobolin B, a sesterterpene metabolite of Helminthosporium oryzae, inhibits proton extrusion from maize coleoptiles. Ophiobolin B inhibits fusicoccin (FC) promoted proton extrusion, potassium uptake and cell enlargement. The MIC values with the antifungal effect of Ophiobolins B on different zygomycetes is 25–50 μg/mL.