Transcriptomics & RNA Databases
Introduction
Transcriptomics and RNA databases are specialized biological repositories that store gene expression data, transcript sequences, RNA annotations, non-coding RNA information, and high-throughput sequencing datasets. These databases support transcriptome analysis, gene expression profiling, RNA sequencing (RNA-seq), functional genomics, and regulatory RNA research. Researchers use these resources to study gene regulation, identify biomarkers, compare expression patterns, and investigate the functions of coding and non-coding RNAs across different organisms.
Major transcriptomics and RNA databases include Gene Expression Omnibus (GEO), Sequence Read Archive (SRA), Ensembl, GENCODE, miRBase, and RNAcentral.
Gene Expression Omnibus (GEO)
The Gene Expression Omnibus (GEO) is a public repository developed by the National Center for Biotechnology Information (NCBI) for storing and sharing gene expression and functional genomics data. It contains datasets generated from microarray, RNA sequencing (RNA-seq), and other high-throughput functional genomics experiments.
Researchers use GEO to explore gene expression profiles, compare experimental conditions, perform meta-analyses, validate research findings, and reuse publicly available datasets.
Website: https://www.ncbi.nlm.nih.gov/geo
Sequence Read Archive (SRA)
The Sequence Read Archive (SRA) is one of the world’s largest repositories for raw high-throughput sequencing data. It stores sequencing reads generated from next-generation sequencing (NGS) technologies and supports reproducible genomic research.
SRA contains data from various sequencing applications, including:
- RNA sequencing (RNA-seq)
- Whole Genome Sequencing (WGS)
- Whole Exome Sequencing (WES)
- Metagenomics
- Amplicon sequencing
- Epigenomics
Researchers use SRA to access raw sequencing datasets for reanalysis, comparative studies, and method development.
Website: https://www.ncbi.nlm.nih.gov/sra
Ensembl / GENCODE
Ensembl
Ensembl is a comprehensive genome database that provides genome assemblies, gene annotations, comparative genomics resources, and genome browsers for a wide range of vertebrate and non-vertebrate species. It enables researchers to explore genes, transcripts, genetic variants, regulatory elements, and comparative genomic information.
Website: https://www.ensembl.org/
GENCODE
GENCODE is a high-quality reference gene annotation project focused primarily on human and mouse genomes. It provides manually curated and computationally validated annotations for protein-coding genes, long non-coding RNAs (lncRNAs), pseudogenes, and transcript variants.
GENCODE serves as a reference annotation source for many genomics and transcriptomics studies.
Website: https://www.gencodegenes.org/
miRBase / RNAcentral
miRBase
miRBase is the primary public database for microRNA (miRNA) sequences and annotations. It catalogs experimentally validated and published microRNAs, providing standardized names, sequences, genomic locations, and related information for miRNA research.
Researchers use miRBase to study gene regulation, disease-associated microRNAs, and post-transcriptional regulatory mechanisms.
Website: https://www.mirbase.org/
RNAcentral
RNAcentral is a comprehensive database that provides unified access to non-coding RNA (ncRNA) sequences collected from multiple expert databases. It integrates information on diverse RNA types, including ribosomal RNA (rRNA), transfer RNA (tRNA), small nuclear RNA (snRNA), small nucleolar RNA (snoRNA), long non-coding RNA (lncRNA), and microRNA (miRNA).
RNAcentral simplifies the discovery, comparison, and annotation of non-coding RNA sequences across species.
Website: https://rnacentral.org/