Polymyxin B nonapeptide

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].

Product Specifications

CAS Number

[86408-36-8]

UNSPSC

12352209

Target

Antibiotic; Bacterial

Type

Peptides

Related Pathways

Anti-infection

Applications

Cancer-programmed cell death

Field of Research

Infection

Assay Protocol

https://www.medchemexpress.com/Polymyxin_B_nonapeptide.html

Purity

99.83

Solubility

H2O : ≥ 100 mg/mL

Smiles

O=C(N[C@H](C(N[C@@](C(N[C@H](C(N[C@]([C@H](O)C)([H])C(NCC[C@@](NC([C@H](CCN)NC([C@@H](N)[C@H](O)C)=O)=O)([H])C(N[C@@H](CCN)C1=O)=O)=O)=O)CCN)=O)([H])CCN)=O)CC(C)C)[C@H](N1)CC2=CC=CC=C2

Molecular Formula

C43H74N14O11

Molecular Weight

963.13

References & Citations

[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.|[2]Danner RL, et al. Purification, toxicity, and antiendotoxin activity of polymyxin B nonapeptide. Antimicrob Agents Chemother. 1989 Sep;33 (9) :1428-34.|[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.