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Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR RS-PCR

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Published on: November 4, 2016

Ribotyping Staphylococcus epidermidis Using Probabilistic Sequence Analysis and Levenshtein Distance Algorithm.

Ryan Yuki Huang¹, Chengye Zhang², Han Liang Lim³

¹Department of Computer Science, Program in Liberal Medical Education (PLME), Brown University, Providence, RI, 02906, USA. ryan_y_huang@brown.edu.

Current Microbiology

|January 10, 2025

Summary

This summary is machine-generated.

Two novel 20-base pair motifs were identified in Staphylococcus epidermidis (S. epidermidis) 16S rRNA genes. These motifs enable accurate ribotyping of diverse S. epidermidis subspecies across various environments.

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Area of Science:

Microbiology
Genetics
Bioinformatics

Background:

Staphylococcus epidermidis (S. epidermidis) is a common bacterium found in diverse environments.
Accurate sub-typing of S. epidermidis is crucial for epidemiological and ecological studies.
Existing methods for S. epidermidis sub-typing may require refinement for broader applicability.

Purpose of the Study:

To identify novel genetic markers for the ribotyping of Staphylococcus epidermidis (S. epidermidis) subspecies.
To establish reference sequences for S. epidermidis 16S rRNA genes.
To assess the prevalence and utility of identified motifs in diverse S. epidermidis isolates.

Main Methods:

Utilized probabilistic sequence analysis of 2507 PCR-amplified 16S rRNA gene reads from a public dataset.
Constructed a sequence probability logo (sequence pLogo) for S. epidermidis 16S rRNA genes.
Applied the Levenshtein Distance algorithm to identify conserved 20-base pair (bp) motifs.

Main Results:

Identified two conserved 20-bp motifs within the S. epidermidis 16S rRNA gene sequences.
These motifs showed high similarity to sequences from 38 S. epidermidis isolates across human, animal, plant, and environmental samples.
Verification using 31 additional reads confirmed the feasibility of using these motifs for ribotyping, distinguishing S. epidermidis strains S1 and S3 from S2.

Conclusions:

Two newly identified 20-bp motifs serve as valuable reference nucleotide residues for S. epidermidis ribotyping.
These motifs demonstrate broad presence across diverse S. epidermidis isolates and environments.
The findings provide a refined approach for subspecies identification and phylogenetic analysis of S. epidermidis.