COMPUTED DESCRIPTORS
| Molecular Weight | 1203.5 g/mol |
|---|---|
| XLogP3 | -2.5 |
| Hydrogen Bond Donor Count | 18 |
| Hydrogen Bond Acceptor Count | 18 |
| Rotatable Bond Count | 29 |
| Exact Mass | 1202.74992724 g/mol |
| Monoisotopic Mass | 1202.74992724 g/mol |
| Topological Polar Surface Area | 491 Ų |
| Heavy Atom Count | 85 |
| Formal Charge | 0 |
| Complexity | 2150 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 13 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Polymyxin B1 is a polypeptide obtained from Bacillus polymyxa strains with antimicrobial activity. Polymyxin B1 exerts its antimicrobial effect through its cationic detergent action on cell membranes. Specifically, this antibiotic binds to the negatively charged site in the lipopolysaccharide layer of the bacterial cell membrane via electrostatic affinity with the positively charged amino groups in the cyclic peptide portion. Subsequently, the fatty acid portion of polymyxin B1 dissolves in the hydrophobic region of the bacterial cell membrane. This results in an alteration in cell membrane structure, disruption of cell wall integrity and an increase in permeability for water and molecules. This will eventually lead to bacterial cell death.