form
lyophilized powder
mol wt
~300 kDa
storage temp.
2-8°C
Biochem/physiol Actions
艰难梭菌毒素 A 和 B 是阳离子依赖性 UDP-葡萄糖葡萄糖基转移酶,是通过这些家族成员的单糖基化作用使 Rho(和 Rho 家族小 GTP 酶)失活的细胞毒素。该单糖基化的作用包括肌动蛋白细胞骨架失调、细胞变圆、细胞毒性和细胞信号改变。Rho 蛋白使用 UDP-葡萄糖作为共底物被毒素 A 和 B 单糖基化。Rho、Rac 和 Cdc42 属于 Rho 亚家族,其为这两种毒素的靶标。不被毒素 A 和 B 修饰的低分子量 GTP 结合蛋白包括 Ras、Rab、Arf 或 Ran 亚家族,以及异三聚体 G 蛋白。
使 Rho(和 Rho 家族小 GTPases)失活。导致肌动蛋白细胞骨架失调、细胞变圆、细胞毒性和细胞信号改变。
Toxin B is 100-1,000-fold more cytotoxic than toxin A in inducing rounding-up of cells and destruction of the actin cytoskeleton.
Features and Benefits
This compound is a featured product for Cyclic Nucleotide research. Click here to discover more featured Cyclic Nucleotide products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.
This compound is featured on the GTP Binding Proteins (Low Molecular Weight) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 1 Dermal - Acute Tox. 1 Inhalation - Acute Tox. 1 Oral
存储类别
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 3
ppe
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
法规信息
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Cyclic nucleotides like cAMP modulate cell function via PKA activation and ion channels.
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