Taxonomic group: bacteria / Proteobacteria
(Phylum: Proteobacteria)
Associated disease: infection due to Coxiella burnetii [ICD11:
XN0QS 
]
NCBI PubMed ID: 22711627Publication DOI: 10.1007/978-94-007-4315-1_4Publisher: New York: Springer.
Editors: Toman R, Heinzen RA, Samuel JE, Mege J-L
Correspondence: Rudolf.Toman
savba.sk
Institutions: Center Department of Microbial and Molecular Pathogenesis, Texas A&M University Health Science, College Station, TX 77843, USA
A lipopolysaccharide (LPS) is considered to be one of the major determinants of virulence expression and infection of virulent Coxiella burnetii. The LPSs from virulent phase I (LPS I) and from avirulent phase II (LPS II) bacteria were investigated for their chemical composition, structure and biological properties. LPS II is of rough (R) type in contrast to LPS I, which is phenotypically smooth (S) and contains a noticeable amount of two sugars virenose (Vir) and dihydrohydroxystreptose (Strep), which have not been found in other LPSs and can be considered as unique biomarkers of the bacterium. Both sugars were suggested to be located mostly in terminal positions of the O-specific chain of LPS I (O-PS I) and to be involved in the immunobiology of Q fever. There is a need to establish a more detailed chemical structure of LPS I in connection with prospective, deeper studies on mechanisms of pathogenesis and immunity of Q fever, its early and reliable diagnosis, and effective prophylaxis against the disease. This will also help to better understanding of host-pathogen interactions and contribute to improved modulation of pathological reactions which in turn are prerequisite for research and development of vaccines of new type. A fundamental understanding of C. burnetii LPS biosynthesis is still lacking. The intracellular nature of the bacterium, lack of genetic tools and its status as a selected agent have made elucidating basic physiological mechanisms challenging. The GDP-β-D-Vir biosynthetic pathway proposed most recently is an important initial step in this endeavour. The current advanced technologies providing the genetic tools necessary to screen C. burnetii mutants and propagate isogenic mutants might speed the discovery process.
Lipopolysaccharide, biosynthesis, structure, Coxiella burnetii, function, Q fever, Coxiella
Structure type: oligomer
Location inside paper: p.71, fig.4.1
Aglycon: lipid A
Trivial name: LPS II
Compound class: LPS
Contained glycoepitopes: IEDB_130650,IEDB_130659,IEDB_130701,IEDB_144983,IEDB_150901,IEDB_152206,IEDB_2189046,IEDB_983930,SB_44,SB_67,SB_72
Comments, role: review; chemical structure of lipid A proximal region of LPS II from Coxiella burnetii in avirulent phase II.
NCBI Taxonomy refs (TaxIDs): 777Reference(s) to other database(s): GTC:G79603ZC, GlycomeDB:
26545
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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