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MedChemExpress - Model Polymyxin B nonapeptide -86408-36-8
Polymyxin B nonapeptide is a cyclic peptide obtained from Polymyxin B by proteolytic removal of its terminal amino acyl residue. Polymyxin B nonapeptide is less toxic, lacks bactericidal activity, and retains its ability to render gram-negative bacteria susceptible to several antibiotics by permeabilizing their outer membranes[1][2][3].MCE products for research use only. We do not sell to patients.
Polymyxin B nonapeptide
MCE China：Polymyxin B nonapeptide
Brand：MedChemExpress (MCE)
Cat. No.HY-106783
CAS：86408-36-8
Purity：99.82%
Storage：Sealed storage, away from moisture and light Powder -80°C 2 years -20°C 1 year *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
Shipping：Room temperature in continental US; may vary elsewhere.
Description：Polymyxin B nonapeptide is a cyclic peptide obtained from Polymyxin B by proteolytic removal of its terminal amino acyl residue. Polymyxin B nonapeptide is less toxic, lacks bactericidal activity, and retains its ability to render gram-negative bacteria susceptible to several antibiotics by permeabilizing their outer membranes.
In Vitro：Polymyxin B nonapeptide (2-32 μg/mL, 24 h) has a synergistic effect with Azithromycin (HY-17506)[1]. Polymyxin B nonapeptide (10 μg/mL) inhibits lipopolysaccharide (HY-D1056)-induced neutrophilic activation in a concentration-dependent manner[2].
In Vivo：Polymyxin B nonapeptide (1.5, 3.0 mg/kg intravenously for 29 days) does not exhibit neuromuscular blocking, neurotoxic, or nephrotoxic effects in rats as observed with polymyxin B sulfate[2].
Sequence：Thr-{Dab}-{Dab}-{Dab}-d-Phe-Leu-{Dab}-{Dab}-Thr (Lactam: Dab3-Thr9)
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References：
[1]. Al-Marzooq F, et al. Discerning the role of polymyxin B nonapeptide in restoring the antibacterial activity of azithromycin against antibiotic-resistant Escherichia coli. Front Microbiol. 2022 Sep 21;13:998671. [Content Brief]
[2]. Danner RL,et al. Purification, toxicity, and antiendotoxin activity of polymyxin B nonapeptide. Antimicrob Agents Chemother. 1989 Sep;33(9):1428-34. [Content Brief]
[3]. Ofek I, et al. Antibacterial synergism of polymyxin B nonapeptide and hydrophobic antibiotics in experimental gram-negative infections in mice. Antimicrob Agents Chemother. 1994 Feb;38(2):374-7. [Content Brief]
Brand introduction:
• MCE (MedChemExpress) has a global exclusive compound library of more than 200 kinds, and we are committed to providing the most comprehensive range of high-quality small molecule active compounds for scientific research customers around the world；
• More than 50,000 highly selective inhibitors and agonists are involved in various popular signaling pathways and disease areas；
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• Provide LC/MS, NMR, HPLC, chiral analysis, elemental analysis and other quality inspection reports to ensure the high purity and high quality of products；
• The biological activity of the products has been verified by the experiments of customers in various countries；
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