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7-Desmethylmicrocystin-LR

Cat. No. M43640
7-Desmethylmicrocystin-LR Structure
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Biological Activity

7-Desmethylmicrocystin-LR is a toxic heptapeptide.

Chemical Information
Molecular Weight 981.15
Formula C48H72N10O12
CAS Number 134842-07-2
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] T Nishizawa et al. J Biochem. Genetic analysis of the peptide synthetase genes for a cyclic heptapeptide microcystin in Microcystis spp

[2] K Harada et al. Toxicon. Isolation of two toxic heptapeptide microcystins from an axenic strain of Microcystis aeruginosa, K-139

[3] M Shirai et al. Appl Environ Microbiol. Toxicity and toxins of natural blooms and isolated strains of Microcystis spp. (Cyanobacteria) and improved procedure for purification of cultures

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