Abstract
AbstractWe have defined the complete structure and assessed the biological activity of the lipopolysaccharide (LPS) from Alkalimonas delamerensis, an alkaliphilic bacterium isolated from soda lakes in China and East Africa. The structural determination, which was achieved by the use of chemical, spectroscopic and spectrometric approaches, indicates a novel Rough type lipopolysaccharide that is rich in negatively charged groups in the lipid A inner core region. The proinflammatory activity of the pure lipopolysaccharide has also been defined by testing the LPS as a stimulant in human HEK293 cells, which express the CD14/MD2/TLR4 complex (HEK293‐hTLR4), and in bone marrow‐derived macrophages.
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