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Monensin B

Cat. No. M40099
Monensin B Structure
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Biological Activity

Monensin B is a polyketide produced by Streptomyces cinnamonensis. Fermentations of Streptomyces cinnamonensis produce a mixture of Monensin A and Monensin B in a ratio dependent upon the relative concentrations of ethylmalonyl-CoA and methylmalonyl-CoA.

Chemical Information
Molecular Weight 656.84
Formula C35H60O11
CAS Number 30485-16-6
Form Solid
Storage 4°C, protect from light, dry, sealed
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] José N Sousa Jr et al. Eur J Mass Spectrom (Chichester). Fragmentation studies of monensin A and B in negative electrospray and nanospray tandem mass spectrometry

[2] Norberto P Lopes et al. Rapid Commun Mass Spectrom. Fragmentation studies on monensin A and B by accurate-mass electrospray tandem mass spectrometry

[3] H Liu et al. Metab Eng. Precursor supply for polyketide biosynthesis: the role of crotonyl-CoA reductase

[4] H Liu et al. J Bacteriol. Role of crotonyl coenzyme A reductase in determining the ratio of polyketides monensin A and monensin B produced by Streptomyces cinnamonensis

[5] S Pospísil et al. Folia Microbiol (Praha). Biosynthesis of monensins A and B: the role of isoleucine

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