Target intelligence / Profile preview

Pseudomonas aeruginosa O-polysaccharide (O-PS)

Target: O-PS
Molecular classification: Polysaccharide, Lipopolysaccharide component

Overview

The Pseudomonas aeruginosa O-polysaccharide, also known as the O-antigen, is a key structural component of the lipopolysaccharide (LPS) found in the outer membrane of this Gram-negative bacterium. It plays a crucial role in defining serotype specificity and mediating interactions with host immune systems. There are two main types: the Common Polysaccharide Antigen (CPA/A-band) and the O-Specific Antigen (OSA/B-band). The O-polysaccharide contributes to virulence by evading immunity, facilitating colonization, and promoting biofilm formation, making it a potential target for vaccine development or antimicrobial therapies.

Other names: O-antigenCommon Polysaccharide Antigen (CPA)A-bandO-Specific Antigen (OSA)B-band

Biological functions

ImmunogenicityImmune evasionBiofilm formationSerotypingReceptor for bacteriophages

Disease associations

InfectionCystic fibrosisAntibiotic resistance

Safety considerations

High structural diversity poses challenges for broad-spectrum targeting strategies.

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