Background：Plays a role in the innate immune response. Binds to the lipid A moiety of bacterial lipopolysaccharides(LPS), a glycolipid present in the outer membrane of all Gram-negative bacteria(PubMed:7517398, PubMed:24120359). Acts as an affinity enhancer for CD14, facilitating its association with LPS. Promotes the release of cytokines in response to bacterial lipopolysaccharide(PubMed:7517398, PubMed:24120359).
