JASPAR (Transcription Factor Binding Profiles)

Base URL

https://jaspar.elixir.no/api/v1/

Auth

No auth required.

Key Endpoints

Endpoint	Description
`/matrix/`	List all TF binding profiles
`/matrix/{matrix_id}/`	Specific profile (e.g. MA0139.1 for CTCF)
`/matrix/?tax_id={id}&collection=CORE`	Filter by species + collection
`/matrix/{id}/?format=jaspar`	Profile in JASPAR format
`/matrix/{id}/?format=meme`	Profile in MEME format
`/matrix/{id}/?format=transfac`	Profile in TRANSFAC format
`/taxon/`	List taxonomic groups
`/collection/`	List collections (CORE, CNE, etc.)

Filter Parameters

tax_id — NCBI taxonomy ID (9606 for human)
collection — CORE, CNE, PHYLOFACTS, etc.
tf_class — TF structural class
name — TF name search
page, page_size — pagination

Example Calls

# Get CTCF binding profile
https://jaspar.elixir.no/api/v1/matrix/MA0139.1/

# Human CORE TF profiles
https://jaspar.elixir.no/api/v1/matrix/?tax_id=9606&collection=CORE&page_size=10

# Get profile in MEME format
https://jaspar.elixir.no/api/v1/matrix/MA0139.1/?format=meme

Response Format

JSON. Profiles include: matrix_id, name, pfm (position frequency matrix as A/C/G/T dict), sequence_logo URL, species, class, family.

API Docs

Swagger at https://jaspar.elixir.no/api/v1/docs/

Rate Limits

No published limits. Be reasonable.