Polymyxin B Sulfate is a mixture of Polymyxin B1 and Polymyxin B2 Sulfate, obtained from Bacillus polymyxia strains.
- Inhibits gram-negative organisms in vitro
- Binds to and interferes with permeability of bacterial cytoplasmic membrane
- Inhibits Ca2+ dependent protein kinase C (PKC)
Polymyxin B sulfate is a mixture of Polymyxin B1 and B2 sulfate. It is used clinically to treat infections of the urinary tract, meninges, and blood stream, caused by susceptible strains of Pseudomonas aeruginosa. It is used to study multidrug-resistant pathogens.
Mode of Action: Polymyxin B Sulfate binds to the lipid A portion of bacterial lipopolysaccharides, disrupting the cytoplasmic membrane by inducing pores large enough to permit nucleotide leakage in bacterial walls. This disrupts the permeability of the cytoplasmic membrane.
Antimicrobial spectrum: Has bactericidal action on most gram-negative bacilli, including E. Coli and on most fungi and gram-positive bacteria.
Potency: ≥6,000 u/mg
Key Applications: Cell culture
Product Type: Biochemicals
Biochemical Category: Antibiotics
Chemical Class: Biochemicals > Antibiotics
Presentation: White Powder
pH: (1% aq soln) 5 - 7
Loss on Drying: ≤8%
Solubility: Soluble in water, 1 mM HCl
Storage & Handling: +4°C, desiccate