{"openapi":"3.1.0","info":{"title":"EMDB API","version":"1.0.0","description":"The Electron Microscopy Data Bank (EMDB) as an API, powered by EMBL-EBI — the public archive of three-dimensional electron-microscopy density maps of proteins, nucleic acids and large macromolecular complexes. EMDB is the electron-microscopy counterpart of the Protein Data Bank, holding maps solved by single-particle cryo-EM, electron tomography and electron crystallography, the technique behind the recent \"resolution revolution\" in structural biology. /v1/search?q=ribosome searches the archive and returns each matching entry's EMDB id (e.g. EMD-1010), title, electron-microscopy method and resolution in ångström. /v1/entry?id=EMD-1010 returns an entry's metadata — its title, the EM method (single particle, tomography, …), the aggregation state, the resolution, the biological sample studied, classification keywords, the deposition, map-release and last-update dates, and the depositing authors. EMDB ids look like EMD-1010, and you may pass just the number. Ideal for structural-biology and cryo-EM tools, structure-comparison and visualisation apps, and education. Data from EMBL-EBI EMDB (public domain). This is the archive of experimental electron-microscopy MAPS — distinct from atomic-coordinate structures (the PDB), predicted structures (AlphaFold) and protein-sequence databases (UniProt).","contact":{"name":"PremiumApi","url":"https://www.oanor.com/by/premiumapi"}},"servers":[{"url":"https://api.oanor.com/emdb-api","description":"oanor gateway"}],"tags":[{"name":"Maps"},{"name":"Meta"}],"components":{"securitySchemes":{"oanorKey":{"type":"apiKey","in":"header","name":"x-oanor-key","description":"Get your key at https://www.oanor.com/developer/keys"}}},"security":[{"oanorKey":[]}],"paths":{"/v1/entry":{"get":{"operationId":"get_v1_entry","tags":["Maps"],"summary":"An EM entry metadata","description":"","parameters":[{"name":"id","in":"query","required":true,"description":"EMDB id, e.g. EMD-1010","schema":{"type":"string"},"example":"EMD-1010"}],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"entry":{"url":"https://www.ebi.ac.uk/emdb/EMD-1010","title":"A cryo-electron microscopic study of ribosome-bound termination factor RF2.","method":"singleParticle","sample":"RF2(GGQ) wild type from E.coli","authors":["Rawat UB","Zavialov AV","Sengupta J","Valle M","Grassucci RA","Linde J","Vestergaard B","Ehrenberg M","Frank J"],"emdb_id":"EMD-1010","keywords":"\n         ","last_update":"2013-12-25","deposition_date":"2002-09-26","map_release_date":"2003-09-26","aggregation_state":"particle","resolution_angstrom":12.9}},"meta":{"timestamp":"2026-06-01T16:23:19.039Z","request_id":"bba5d64c-3a55-4eaf-9b94-8ec5b4518afc"},"status":"ok","message":"Entry retrieved","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/search":{"get":{"operationId":"get_v1_search","tags":["Maps"],"summary":"Search the EM archive","description":"","parameters":[{"name":"q","in":"query","required":true,"description":"Search text, e.g. ribosome","schema":{"type":"string"},"example":"ribosome"},{"name":"limit","in":"query","required":false,"description":"Max results (1-25)","schema":{"type":"string"}}],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"count":10,"query":"ribosome","entries":[{"title":"Manikomycin bound to the Escherichia coli 70S ribosome","method":"singleParticle","emdb_id":"EMD-54009","resolution_angstrom":2.45},{"title":"Cryo-EM structure of P. urativorans 70S ribosome after 2h acute stress - State 1: Rotated with E-tRNA/P-tRNA","method":"singleParticle","emdb_id":"EMD-57867","resolution_angstrom":3.08},{"title":"Cryo-EM structure of P. urativorans 70S ribosome after 2h acute stress - State 4: E-tRNA/RaiA/Balon","method":"singleParticle","emdb_id":"EMD-57870","resolution_angstrom":2.59},{"title":"E. coli 70S ribosome with peptidyl-tRNA, mRNA and Hsp15","method":"singleParticle","emdb_id":"EMD-57974","resolution_angstrom":2.78},{"title":"E. coli 70S ribosome with peptidyl-tRNA and Hsp15","method":"singleParticle","emdb_id":"EMD-57975","resolution_angstrom":2.92},{"title":"EMCV IRES captured on mammalian 40S with initiator tRNA","method":"singleParticle","emdb_id":"EMD-64644","resolution_angstrom":4.6},{"title":"EMCV IRES captured on mammalian 40S ribosome with initiator tRNA and eIF2","method":"singleParticle","emdb_id":"EMD-64645","resolution_angstrom":5.01},{"title":"40S ribosome without initiation factors","method":"singleParticle","emdb_id":"EMD-64646","resolution_angstrom":4.5},{"title":"70S ribosome containing RpmE2 from Neisseria gonorrhoeae","method":"singleParticle","emdb_id":"EMD-76891","resolution_angstrom":3.27},{"title":"70S ribosome containing RpmE from Neisseria gonorrhoeae","method":"singleParticle","emdb_id":"EMD-76892","resolution_angstrom":3.21}]},"meta":{"timestamp":"2026-06-01T16:23:19.293Z","request_id":"d55f9c6d-9497-4624-aec5-1dd2d5af91cb"},"status":"ok","message":"Entries retrieved","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/meta":{"get":{"operationId":"get_v1_meta","tags":["Meta"],"summary":"Usage notes","description":"","parameters":[],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"note":"EMDB (the Electron Microscopy Data Bank) is the public archive of 3D electron-microscopy density maps of proteins, nucleic acids and large complexes — solved by single-particle cryo-EM, electron tomography and electron crystallography. It is the EM counterpart of the PDB. /v1/search?q=ribosome = search the archive (limit 1-25), returning each entry's EMDB id (e.g. EMD-1010), title, EM method and resolution; /v1/entry?id=EMD-1010 = an entry's metadata — title, method (single particle, tomography, …), aggregation state, resolution in ångström, the sample studied, keywords, deposition/release/update dates and authors. EMDB ids look like EMD-1010 (you may pass just the number). Data from EMBL-EBI EMDB (public domain). This is the archive of experimental electron-microscopy MAPS — distinct from atomic-coordinate structures (PDB), predicted structures (AlphaFold) and sequence databases. Ideal for structural biology, cryo-EM workflows and education.","source":"EMDB — Electron Microscopy Data Bank, EMBL-EBI (ebi.ac.uk/emdb)","endpoints":["/v1/search","/v1/entry","/v1/meta"]},"meta":{"timestamp":"2026-06-01T16:23:19.374Z","request_id":"e00390e4-4995-4403-a2ed-04bf452e631a"},"status":"ok","message":"Meta retrieved","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}}},"x-oanor-pricing":[{"slug":"free","name":"Free","price_cents_month":0,"monthly_call_quota":2300,"rps_limit":2,"hard_limit":true},{"slug":"starter","name":"Starter","price_cents_month":700,"monthly_call_quota":49000,"rps_limit":5,"hard_limit":true},{"slug":"pro","name":"Pro","price_cents_month":2100,"monthly_call_quota":215000,"rps_limit":12,"hard_limit":true},{"slug":"mega","name":"Mega","price_cents_month":5800,"monthly_call_quota":790000,"rps_limit":35,"hard_limit":true}],"x-oanor-marketplace-url":"https://www.oanor.com/api/emdb-api"}