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1. (CSDB ID: 9785) | report error |
| 3HOiMar-(1-2)-+ | P-4)-+ | | | 3HOiMar-(1-2)-+ | | | | | a-Kdop-(2-4)-a-Kdop-(2-6)-b-D-GlcpN-(1-6)-a-D-GlcpN-(1-P | | 3HOiC15-(1-3)-+ 3HOPam-(1-3)-+ | Show graphically |
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Porphyromonas gingivalis W50
(NCBI TaxID 1125722,
species name lookup)
]
hirszfeld.plPorphyromonas gingivalis is an oral human pathogen. The bacterium destroys dental tissue and is a serious health problem worldwide. Experimental data and bioinformatic analysis revealed that the pathogen produces three types of lipopolysaccharides (LPS): normal (O-type), anionic (A-type), and capsular (K-type). The enzymes involved in the production of all three types of lipopolysaccharide have been largely identified for the first two and partially for the third type. In the current work, we use bioinformatics tools to predict biosynthetic pathways for the production of the normal (O-type) lipopolysaccharide in the W50 strain Porphyromonas gingivalis and compare the pathway with other putative pathways in fully sequenced and completed genomes of other pathogenic strains. Selected enzymes from the pathway have been modeled and putative structures are presented. The pathway for the A-type antigen could not be predicted at this time due to two mutually exclusive structures proposed in the literature. The pathway for K-type antigen biosynthesis could not be predicted either due to the lack of structural data for the antigen. However, pathways for the synthesis of lipid A, its core components, and the O-type antigen ligase reaction have been proposed based on a combination of experimental data and bioinformatic analyses. The predicted pathways are compared with known pathways in other systems and discussed. It is the first report in the literature showing, in detail, predicted pathways for the synthesis of selected LPS components for the model W50 strain of P. gingivalis.
Porphyromonas gingivalis, LPS biosynthesis, O-type antigen, structure prediction
Structure type: oligomer|
2. (CSDB ID: 10947) | report error |
| 60%EtN-(1--P--2)--+ | -6)-a-D-Glcp-(1-4)-a-L-Rhap-(1-3)-b-D-GalpNAc-(1-3)-a-D-Galp-(1- |
← revised structure Show graphically |
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← revised structure Show legend Show as text |
Porphyromonas gingivalis W50
(NCBI TaxID 1125722,
species name lookup)
]hirszfeld.plPorphyromonas gingivalis is an oral human pathogen. The bacterium destroys dental tissue and is a serious health problem worldwide. Experimental data and bioinformatic analysis revealed that the pathogen produces three types of lipopolysaccharides (LPS): normal (O-type), anionic (A-type), and capsular (K-type). The enzymes involved in the production of all three types of lipopolysaccharide have been largely identified for the first two and partially for the third type. In the current work, we use bioinformatics tools to predict biosynthetic pathways for the production of the normal (O-type) lipopolysaccharide in the W50 strain Porphyromonas gingivalis and compare the pathway with other putative pathways in fully sequenced and completed genomes of other pathogenic strains. Selected enzymes from the pathway have been modeled and putative structures are presented. The pathway for the A-type antigen could not be predicted at this time due to two mutually exclusive structures proposed in the literature. The pathway for K-type antigen biosynthesis could not be predicted either due to the lack of structural data for the antigen. However, pathways for the synthesis of lipid A, its core components, and the O-type antigen ligase reaction have been proposed based on a combination of experimental data and bioinformatic analyses. The predicted pathways are compared with known pathways in other systems and discussed. It is the first report in the literature showing, in detail, predicted pathways for the synthesis of selected LPS components for the model W50 strain of P. gingivalis.
Porphyromonas gingivalis, LPS biosynthesis, O-type antigen, structure prediction
Structure type: polymer chemical repeating unit|
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