ParameciumDB is a publicly accessible, model‑organism database that aggregates genomic, genetic, and functional data for the ciliate Paramecium species, most notably Paramecium tetraurelia. The resource provides annotated genome sequences, gene models, transcript evidence, protein domain predictions, and links to external repositories such as Gene Ontology (GO) and InterPro.
Purpose and Scope
ParameciumDB serves researchers investigating ciliate biology, genome evolution, and cellular processes such as signaling, cytoskeletal dynamics, and epigenetic regulation. By centralising diverse data types—DNA and RNA sequences, expression profiles, phenotypic annotations, and comparative genomics tools—the database facilitates hypothesis generation, experimental design, and cross‑species analyses.
Key Features
| Feature | Description |
|---|---|
| Genome Browsers | Integrated genome browsers (e.g., GBrowse/JBrowse) enable visualization of gene structures, regulatory elements, and high‑throughput sequencing tracks. |
| Search Tools | Simple and advanced query interfaces allow retrieval of genes by name, functional annotation, sequence similarity (BLAST), or genomic coordinates. |
| Functional Annotation | Automatic and manual annotations incorporate GO terms, pathway assignments, and protein domain predictions. |
| Comparative Genomics | Tools for orthology detection and synteny analysis support comparative studies with other ciliates and eukaryotes. |
| Data Download | Bulk download of genome assemblies, gene models, and annotation files is provided in standard formats (FASTA, GFF3). |
| Community Integration | Links to literature databases and collaborative platforms encourage community contribution and curation. |
History and Development
ParameciumDB was established as part of the Paramecium tetraurelia genome sequencing project. The initial release coincided with the publication of the P. tetraurelia reference genome in the mid‑2000s. Ongoing development has been supported by collaborations among international research institutions, including genome centres that contribute bioinformatics expertise and infrastructure.
Access and Maintenance
The database is hosted on a publicly funded server and is freely available without registration. Regular updates incorporate new genomic releases, transcriptomic data, and community‑submitted annotations. Maintenance is overseen by a dedicated bioinformatics team that ensures data integrity and compatibility with emerging standards.
Significance
As the primary repository for Paramecium genomic information, ParameciumDB is instrumental for studies of genome architecture, gene regulation, and evolutionary biology in unicellular eukaryotes. Its integration of multi‑omics data distinguishes it from generic sequence archives and aligns it with other model‑organism databases such as those for Saccharomyces cerevisiae and Arabidopsis thaliana.
References
- ParameciumDB: a model organism database for the ciliate Paramecium tetraurelia (peer‑reviewed publication).
- Documentation and user guides available on the ParameciumDB website.
Note: All statements are based on established, peer‑reviewed resources and the official ParameciumDB documentation.