Viral RNA resource

Search and explore viral IRES families

IREScentral organizes full-length viral internal ribosome entry site candidates into sequence–structure families, with evidence, taxonomy, activity and downloadable records.

Examples:IRESG001 Picornaviridae Type IV

Browse the resource

Start from a family record, the global atlas, viral taxonomy, or a downloadable dataset.

IRES familiesEvidence, consensus structure, members and activity.Sequence–structure atlasExplore assigned and orphan candidates in context.Virus taxonomyFamily, genus and host distributions across the dataset.Data downloadsMetadata, release files and schemas.

Sequence–structure atlas

Every candidate sequence as a point — colour by family, virus taxonomy, IRES type, evidence class or measured FACS activity. Hover to highlight a group; click a point to open its family.

Full-page atlas →

scroll to zoom · drag to pan · double-click to reset · click a point to open its family

Representative IRES families

The largest families by assigned member count.

View all 343 families →

Family	IRES type	Top virus family	Evidence	Members	Median length
IRESG001	Type I	Picornaviridae	Rfam/literature IRESG	12,639	710
IRESG047	—	unknown	Residual de novo IRESG	2,661	702
IRESG005	Type IV	unknown	Rfam/literature IRESG	2,569	314
IRESG003	Type II	unknown	Rfam/literature IRESG	2,474	1008
IRESG054	—	unknown	Residual de novo IRESG	1,535	654
IRESG024	Type IV	unknown	Rfam/literature IRESG	1,386	2057
IRESG006	Type IV	unknown	Rfam/literature IRESG	1,199	326
IRESG008	Type IGR_I	unknown	Rfam/literature IRESG	1,113	316

Data access and reproducibility

Release metadata, file schemas and planned model/alignment bundles are on the download page.

Open data access →