SKU: P054

    Polymyxin B6 Sulfate, EvoPure®


    Polymyxin B sulfate is a polypeptide antibiotic and is composed of polymyxins B1, B2, and B3 with fractions B1 and B2 comprising the majority of the mixture. Polymyxin B6 sulfate is freely soluble in aqueous solution (25 mg/mL). Polymyxin B components are structurally identical with the exception of a variable fatty acid group on each fraction. Results from in vitrostudies have shown marginal differences in MIC data when comparing the fractions.

    • We also offer:

      • Polymyxin B Sulfate, USP (P007)
      • Polymyxin B1 Sulfate, EvoPure® (P037)
      • Polymyxin B1-I Sulfate, EvoPure® (P038)
      • Polymyxin B2 Sulfate, EvoPure® (P039)
      • Polymyxin B3 Sulfate, EvoPure® (P040)
      • Polymyxin E1 Sulfate, EvoPure® (P055)
      • Polymyxin E2 Sulfate, EvoPure® (P056)

    EvoPure® products are purified single antibiotic fractions, most are >99% pure. Highly pure Polymyxin products can be used to analyze the specific effects of individual Polymyxin B fractions.

    Mechanism of Action Polymyxin B targets and alters permeability lipopolysaccharide (LPS) of Gram-negative bacteria leading to lysing of the cell. Polymyxin B only needs to interact with LPS, it is not required to enter the cell.
    Spectrum Polymyxin B Sulfate targets the outer membrane of Gram-negative bacteria especially Pseudomonas aeruginosa.
    Microbiology Applications Polymyxin B Sulfate is commonly used in clinical in vitro microbiological antimicrobial susceptibility tests (panels, discs, and MIC strips) against Gram-negative microbial isolates. Medical microbiologists use AST results to recommend antibiotic treatment options.  Representative MIC values include:
    • Pseudomonas aeruginosa 0.25 µg/mL – 1 µg/mL
    • For a representative list of Polymyxin B Sulfate MIC values, click here.

    Media Supplements

    Polymyxin B is routinely used as a selection agent in several types of isolation media:

    Perfringens agar - Supplement A and Supplement B

    Perfringens Agar - SFP and TSC Selective Supplements

    Columbia Blood AgarCampylobacter Selective Supplement (Skirrow)

    Columbia Blood Agar - Campylobacter Selective Supplement (Blaser-Wang)

    Brucella mediumBrucella Selective Supplement

    MYP Agar - Polymyxin B Bacillus Selection Supplement

    Legionella CYE Agar - Legionella BMPA-α Selective Supplement

    Legionella CYE Agar - Legionella MWY Selective Supplement

    Campylobacter Agar - Campylobacter Selective Supplement (Preston)

    PALCAM Agar - PALCAM Selective Supplement

    Legionella CYE Agar - Legionella GVPC Selective Supplement

    m-CP Medium - Membrane C. perfringens Selective Supplement

    Burkholderia cepacia Agar Base - Burkholderia cepacia Selective Supplement

    ORSAB - ORSAB Selective Supplement

    Campylobacter Agar Base - Modified Preston Campylobacter Selective Supplement

    Brucella Medium Base - Modified Brucella Selective Supplement

    Legionella CYE Agar - Legionella GVPN Selective Supplement

    Chromogenic Listeria Agar - Chromogenic Listeria Selective Supplement

    Chromogenic Bacillus cereus Agar - Chromogenic Bacillus cereus Selective Supplement

    Chromogenic Listeria Agar - Chromogenic Listeria Differential Supplement

    Plant Biology Applications Polymyxin B Sulfate was successfully tested to counteract phytopathogenic Gram-negative bacterial growth including different strains of Pseudomonas viridiflava and Erwinia carotovora. Polymixin B Sulfate was shown to reduce bacterial growth of different strains of Pseudomonas viridiflava at low concentrations, (0.08 µg/ml) and Erwinia carotovora growth at slightly higher concentrations (0.25 µg/ml) (Selim et al, 2005). Polymyxin B has been shown to elict alkaloid accumulation in E. californica. Treatment at 0.04 mg/ml for 4 hours showed a 5.5 times increase in Jasmonate levels over the control (water).
    Molecular Formula C56H98N16O14 • xH2SO4 (lot specific)

    Newton BA (1956)  The properties and mode of action of the Polymyxins. Bacter. Rev.  20(1):14-27  PMID 13303920

    Selim S, Negrel J, Govaerts C, Gianinazzi S and Tuinen van D (2005)  Isolation and partial characterization of antagonistic peptides produced by Paenibacillus sp. strain B2 isolated from the sorghum Mycorrhizosphere. Appl. Environ. Microbiol. 71(11):6501–6507  PMID 16269674

    Zavascki AP, Goldani LA, Li J and Nation RL (2007)  Polymyxin B for the treatment of multidrug-resistant pathogens: A critical review. J. Antimicrob. Chemother.  60(6):1206-1215  PMID 17878146

    Cao G et al (2009)  Development and validation of a reversed-phase high-performance liquid chromatography assay for Polymyxin B in human plasma. J. Antimicrob. Chemother.  62(5):1009-1014 PMID 18765414

    Tam VH, Cao H, Ledesma, KR, Hu M (2011)  In vitro potency of various Polymyxin B components.55(9):4490-491  PMID 21709096

    Orwa JA et al (2001)  Isolation and structural characterization of Polymyxin B components. J Chromatogr. A 912(2):369-373  PMID 11330807

    Mueller MJ, Brodschelm W, Spannagl E and Zenk MH (1993)  Signaling in the elicitation process is mediated through the octadecanoid pathway leading to jasmonic acid.  Proc. Natl. Acad. Sci. USA 90(16):7490-7494  PMID 11607420