SKU: N064  / 
    CAS Number: 1476-53-5

    Novobiocin sodium, Granulized

    $46.35 - $173.57

    Novobiocin Sodium, Granulized is an aminocoumarin antibiotic that prevents cell division. Novobiocin Sodium is freely soluble in aqueous solution.  The product has been granulized which enhances the rate of water solubility.  This formulation has a significantly larger particle size than Novobiocin Sodium (N014), (average size 333.4 µm versus 0.139 µm) and it is dust-free for enhanced safety. 

    Mechanism of Action

    Novobiocin Sodium, Granulized is an inhibitor of bacterial DNA gyrase, a topoisomerase which relieves strain as DNA unwinds during replication and transcription.  It also inhibits eukaryotic DNA topoisomerase II (Topo II).  By inhibiting these enzymes, Novobiocin blocks DNA synthesis and ultimately causes cell death.  The compound is an inhibitor of heat shock protein (Hsp90), interacting with the C-terminal ATP-binding domain of Hsp90.  Novobiocin has been described to inhibit retroviral RNA-dependent DNA polymerase and ATP-binding cassette super-family G member 2 (ABCG2).


    Effective against Gram-positive organisms.  Used to differentiate between coagulase-negative Staphylococcus.

    Microbiology Applications

    Novobiocin sodium is commonly used in clinical in vitro microbiological antimicrobial susceptibility tests (panels, discs, and MIC strips) against Gram-positive microbial isolates. Medical microbiologists use AST results to recommend antibiotic treatment options for infected patients. Representative MIC values include:

      • Staphylococcus aureus 0.25 µg/mL
      • Staphylococcus saprophyticus 2 µg/mL
      • For a complete list of Novobiocin MIC values, click here.
    Plant Biology Applications

    In Morocco, date palm tissue can be contaminated with endophytic Bacillus.  Among 40 compounds tested, only Novobiocin and Gentamycin were efficient in tissue culture against these bacteria when incorporated into the culture medium at 20 mg/L. (Benjama and Charkaoui, 1997).

    Molecular Formula



    Benjama A and Charkaoui B (1997)  Control of Bacillus contaminating date palm tissue in micropropagation using antibiotics. In: Cassells AC (eds)  Pathogen and microbial contamination management in micropropagation. Developments in plant pathology.  Vol 12  Springer, Dordrecht.  pp 207-211.

    Brown, PO and Peebles CL (1978)  Energy Coupling in DNA Gyrase and the Mechanism of Action of Novobiocin.  PNAS  75.2: 4838-4842  PMID 368801

    Sugino A, Higgins NP, Bown PO, Peebles CL and Cozzareli NR (1978)  Energy coupling in DNA gyrase and the mechanism of action of novobiocin.  Proc. Natl. Acad.Sci USA 75(10):4838-4842  PMID 368801

    Sumiyoshi Y, Nishikawa T, Watanabe T and Kano K (1983)  Inhibition of retrovirus RNA-dependent DNA polymerase by novobiocin and nalidixic acid.  J. Gen. Virol 64(Pt 10):2329-2333  PMID 6311959