RNAcentral

RNAcentral aggregates non-coding RNA (ncRNA) sequences from multiple expert databases into a unified resource with species-specific unique identifiers and integrated functional and structural annotations.

Key Features:

• Integrated ncRNA Sequence Repository: Consolidates sequences from established RNA databases and assigns unique identifiers per species for precise data retrieval.
• Cross-Referenced Functional and Structural Annotations: Incorporates modified nucleotide data from MODOMICS, structural information from PDB, Rfam family assignments, tRNA secondary structures, Gene Ontology terms, and miRNA–target interactions.
• Genomic Mapping Pipeline: Identifies genomic locations of ncRNA sequences across 296 species to support genome-wide annotation.
• Rfam-Based Quality Control: Uses Rfam family classification to detect potential contamination and incomplete sequences.

Scientific Applications:

• ncRNA Genomics and Functional Annotation: Supports genome annotation, comparative genomics, and functional analysis of non-coding RNAs in academic and commercial research.

Methodology:

RNAcentral integrates curated ncRNA datasets, assigns stable species-specific accessions, maps sequences to reference genomes using a dedicated pipeline, and applies Rfam-based classification and cross-database annotation to ensure data integrity and functional context.