Actinomycin D/更生霉素/放线菌素D/SIGMA A9415,≥95%
- 产品编号:A0158
- 中文名称:Actinomycin D/更生霉素/放线菌素D/SIGMA A9415
- 英文名称:Actinomycin D
- 英文别名:Actinomycin C1, Actinomycin IV, Dactinomycin
- CAS号:50-76-0
- 分子式:C62H86N12O16
- 分子量:1255.42
- 纯度:≥95%
- EC号:200-063-6
- MDL号:MFCD00005033
订货信息:
产品规格价格(RMB)
- A0158-2MG(SIGMA原装)450
- A0158-5MG(SIGMA原装)750
性能描述
生物学来源 | from Streptomyces sp. |
试剂纯度 | ≥95% |
form | powder |
color | red, powder |
mp | 251-253 |
solubility | ethanol, DMSO: soluble (Stable in aqueous solutions at 2-8 °C.) |
suitability | suitable for cell culture |
storage temp. | 2-8°C |
Biochem/physiol Actions
An antineoplastic antibiotic that inhibits cell proliferation by forming a stable complex with DNA and blocking the movement of RNA polymerase which interferes with DNA-dependent RNA synthesis. Induces apoptosis. Potent antitumor agent. For cell culture applications, actinomycin D is used as a selection agent and is used in banding techniques to differentiate between different regions of chromosomes.
Application
Recommended for use in cell culture applications as a selection agent at 1 μg/ml.
放线菌素D由链霉菌产生的、可与DNA结合,阻挡RNA聚合酶的移动,抑制RNA合成的一种抗生物素。放线菌素D(Dactinomycin D)又称更生霉素,分子中含有一个苯氧环结构,通过它连接两个等位的环状肽链。此肽链可与DNA分子的脱氧鸟嘌呤发挥特异性相互作用,使dactinomycin D嵌入DNA双螺旋的小沟中,与DNA形成复合体,阻碍RNA多聚酶的功能,抑制RNA的合成,特别是mRNA的合成。
放线菌素D为细胞周期非特异性药物,但对G1期前半段最敏感,即相当tRNA合成时。本品与DNA结合,抑制以DNA为模板的RNA多聚酶,从而抑制RNA的合成。结合方式可能是通过其发色团嵌入DNA的碱基对之间,而其肽链则位于DNA双螺旋的小沟内,妨碍RNA多聚酶沿DNA分子前进。本品对RNA合成的抑制作用主要是RNA链的延伸而不是影响它的起始,本品选择性地与DNA中的鸟嘌呤结合,与缺乏鸟嘌呤碱基的DNA不发生结合作用。本品不能阻止DNA的复制,因DNA多聚酶能在其正前方引起DNA局部变性(如双螺旋的解开),可使本品较快地解离开。