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γ-Amanitin

Cat. No. M38920
γ-Amanitin Structure
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Biological Activity

γ-Amanitin an ADC cytotoxin and isolated from the mushroom. γ-Amanitin inhibits RNA polymerase II and disrupts synthesis of mRNA. γ-Amanitin shows similar effects to α-Amanitin and β-Amanitin.

Chemical Information
Molecular Weight 902.97
Formula C39H54N10O13S
CAS Number 21150-23-2
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] Recep Bayram et al. Toxicon. Erdosteine reduces cytotoxicity induced by alpha- and beta-amanitin, but not gamma-amanitin, in CA3 hepatocyte cultures

[2] Nicole L Abbott et al. Toxicon. Detection of α-, β-, and γ-amanitin in urine by LC-MS/MS using 15N10-α-amanitin as the internal standard

[3] Candace S Bever et al. Toxins (Basel). A New Conjugation Method Used for the Development of an Immunoassay for the Detection of Amanitin, a Deadly Mushroom Toxin

[4] C J Ingles et al. J Biol Chem. Alpha-Amanitin resistance of RNA polymerase II in mutant Chinese hamster ovary cell lines

[5] R Seeger et al. Z Naturforsch C Biosci. Amanitin content and toxicity of Amantia verna Bull

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