Related Experiment Video
Updated: Aug 14, 2026

08:03
Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
Published on: December 7, 2021
xBASE, a collection of online databases for bacterial comparative genomics
Roy R Chaudhuri1, Mark J Pallen
1Division of Immunity and Infection, University of Birmingham, Birmingham, UK.
Nucleic Acids Research
|December 31, 2005
Summary
The xBASE system extends the coliBASE schema to create new bacterial genome databases for various taxa. These databases offer user-friendly genome comparison and analysis tools for research.
Area of Science:
- Microbiology
- Bioinformatics
- Genomics
Background:
- The Escherichia coli database, coliBASE, provided a foundation for bacterial genomic information.
- A need existed for comprehensive genomic resources for diverse bacterial taxa beyond E. coli.
Purpose of the Study:
- To adapt the coliBASE schema for a broader range of bacterial species.
- To develop a unified system (xBASE) for accessing and comparing bacterial genomes.
- To introduce enhanced analytical features for genomic research.
Main Methods:
- Application of the coliBASE schema to create new databases for specific bacterial groups.
- Development of a web-based graphical interface for user-friendly access.
- Implementation of features such as whole genome displays, gene painting, pattern search, and batch BLAST.
Main Results:
- Creation of multiple specialized databases: CampyDB, PseudoDB, ClostriDB, RhizoDB, and MycoDB.
- Provision of tools for genome annotation and comparison.
- Introduction of novel features for motif identification and protein analysis.
Conclusions:
- The xBASE system successfully extends bacterial genomic data accessibility and analysis capabilities.
- These databases facilitate hypothesis generation for laboratory investigations.
- xBASE serves as a valuable resource for the microbiology and bioinformatics communities.
Related Concept Videos
Evolutionary Relationships through Genome Comparisons
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
Applications of Molecular Taxonomy
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
Genome Annotation and Assembly
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
Microbial Classification System
Classification is the process of organizing organisms into hierarchically inclusive groups based on their phenotypic similarities or evolutionary relationships. A species comprises one or more strains, and closely related species are grouped into genera. Genera are further classified into families, families into orders, orders into classes, and so forth, up to the domain level, which is the broadest taxonomic rank derived from a combination of phenotypic and genotypic data.The nomenclature of...

