Validamycin A 是一种杀菌剂,属于农用抗生素,最初从 Streptomyces hygroscopicus var. limoneus 中分离得到。Validamycin A 能抑制黄曲霉的生长, 其 MIC 值为 1 μg/mL。Validamycin A 对立枯丝核菌的海藻酸酶 (trehalase) 有高效的抑制活性,其 IC50 为 72 μM。Validamycin A 是一种可逆的酪氨酸酶抑制剂,其 Ki 值为 5.893 mM。
Validamycin A, a fungicidal, is an agricultural antibiotic. Validamycin A is originally isolated from Streptomyces hygroscopicus var. limoneus. Validamycin A inhibits the growth of A. flavus, with a MIC of 1 μg/mL. Validamycin A shows potent inhibitory activity against trehalase of Rhizoctonia solani, with an IC50 of 72 μM. Validamycin A is a reversible tyrosinase inhibitor, with a Ki of 5.893 mM.
体外研究
Validamycin A (0.5-1 μg/mL; 18 hours) inhibits the growth of A. flavus and delayed conidial germination.
Validamycin A shows no cytotoxicity to human bronchial epithelial cells.
Validamycin A directly binds to several residues in the active site of tyrosinase, including HIS85, HIS244, GLU256, HIS259 and ASN260.
Cell Proliferation Assay
Cell Line:
Aspergillus flavus ATCC204304
Concentration:
0.5 μg/mL, 1 μg/mL
Incubation Time:
18 hours
Result:
Inhibited the growth of Aspergillus flavus.
分子式
C20H35NO13
分子量
497.49
CAS号
37248-47-8
中文名称
井冈霉素A
运输条件
Room temperature in continental US; may vary elsewhere.
储存方式
4°C, protect from light, stored under nitrogen
*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)
溶解性数据
In Vitro:
H2O : 125 mg/mL (251.26 mM; Need ultrasonic)
配制储备液
浓度溶剂体积质量
1 mg
5 mg
10 mg
1 mM
2.0101 mL
10.0505 mL
20.1009 mL
5 mM
0.4020 mL
2.0101 mL
4.0202 mL
10 mM
0.2010 mL
1.0050 mL
2.0101 mL
*
请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 储备液的保存方式和期限:-80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)。-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。