Department of Biomedical Engineering, National University of Singapore, Novena, Singapore
Letter
Phylogeny of Different Helicobacter pylori Strains could not be Explained by 16S rRNA Gene due to High Similarity in Gene Sequence Across Strains
Author(s): Wenfa Ng*
Understanding the evolutionary relatedness of different strains of a species helped identify strain-specific differences
that may be useful for disease diagnosis and treatment. Typically, such strain level typing would be augmented by
molecular assays such as DNA sequencing, and phylogenetic tree analysis. This work utilizes public data on the
16S rRNA gene sequence of different strains of Helicobacter pylori to help plot the phylogenetic tree that describes
the evolutionary trajectories of the different strains. Results from multiple sequence alignment reveals high level of
conservation in 16S rRNA gene sequence across strains. This then translates into a phylogenetic tree structure that
suggests very close evolutionary relationships of the different strains except for one outlier strain. Even in the case
of the outlier strain, its evol.. View more»