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Genome browser website, genes, variation, comparative genomics, REST API

Website

Ensembl

Ensembl is a genome browser website for exploring genes, transcripts, variants, regulatory features, comparative genomics, genome annotation, and REST API data.

Official site
ensembl.org is the main public website for Ensembl.
Browser focus
Ensembl focuses on genes, transcripts, variants, regulatory annotation, comparative genomics, genome assemblies, tools, downloads, and APIs.
Version caution
Genome browser work should track assembly versions, Ensembl releases, identifiers, and metadata because annotations can change.
The Ensembl logo.View logo policy at Ensembl

What Ensembl is

Ensembl is a genome browser website at ensembl.org for exploring genome annotation across humans and many other species. It helps users find genes, transcripts, variants, regulatory features, comparative genomics data, tools, downloads, and programmatic access points.

Genome browser

A genome browser gives users a visual way to move along chromosomes and inspect layered biological information. Ensembl pages can show genes, transcripts, exons, variants, regulatory regions, repeats, comparative alignments, and other tracks tied to a particular genome assembly.

Genes and transcripts

Ensembl gene and transcript records connect genomic coordinates with names, identifiers, sequences, protein products, external references, and annotation details. Those records are useful starting points, but interpretation still depends on assembly version, transcript choice, evidence, species, and biological context.

Variation and VEP

The site includes variation data and tools for understanding where variants sit in the genome and how they may affect transcripts or proteins. Ensembl's Variant Effect Predictor is especially useful for annotating variants against genes, transcripts, regulatory regions, and known consequence terms.

Comparative genomics

Comparative genomics tools help users inspect homologues, gene trees, alignments, conserved regions, and relationships among species. This makes Ensembl useful for studying evolution, model organisms, genome conservation, and the way gene function can be inferred across related organisms.

APIs and downloads

Ensembl offers APIs and data services for researchers and developers who need more than manual browsing. The REST API, software APIs, and downloads can support pipelines, reproducible notebooks, database integrations, genome annotation workflows, and teaching examples.

Strengths and limits

Ensembl is powerful because it connects many genome data types in one interface, but genome annotation is never static. Gene models, transcript sets, variant annotations, regulatory tracks, and species coverage can change across releases, so careful work should record identifiers, versions, and source metadata.

Why it matters

Ensembl matters because modern biology depends on moving between DNA sequence, genes, transcripts, proteins, variants, regulation, and species comparison. A public genome browser and API make those connections easier to inspect, teach, cite, and reuse.

WHOIS domain data

Data pulled: June 1, 2026View current WHOIS record

Domain
ensembl.org
IP address
193.62.192.83
Registrar
GoDaddy.com, LLC
WHOIS server
whois.godaddy.com
Referral URL
http://www.whois.godaddy.com
Created
January 20, 2000
Updated
December 10, 2024
Expires
January 20, 2030
Nameservers
ns73.domaincontrol.com (97.74.106.47); ns74.domaincontrol.com (173.201.74.47)
Domain status
clientDeleteProhibited; clientRenewProhibited; clientTransferProhibited; clientUpdateProhibited