Proteomics on the platform
Search PRIDE mass spectrometry datasets and EMDB cryo-EM structures for protein identification, quantification, and structural analysis.
Proteomics helps you find published mass-spectrometry datasets and cryo-EM structures for a protein of interest — searching PRIDE for proteomics experiments and EMDB for density maps, with the protocols, files, and linked structures behind each. Reach for it when you want existing experimental evidence — expression, post-translational modifications, or a solved structure — rather than a prediction. Where genomics works at the gene level, proteomics finds the protein-level and structural data that a gene-to-protein cross-reference points you toward. See what you can achieve for the full set.
Proteomics overview
The Proteomics toolkit provides four tools for discovering mass spectrometry proteomics datasets and cryo-EM structural data from the two largest public repositories: PRIDE and EMDB. All tools use direct EBI REST API calls with no GPU compute, returning results in 2-6 seconds.
Architecture
Tool inventory
PRIDE tools
| Lookup | Description |
|---|---|
| PRIDE Project Search | Search the PRIDE archive for proteomics datasets by keyword, organism, instrument, or PTM type |
| PRIDE Dataset Details | Retrieve full metadata, protocols, file listings, and download links for a specific PXD project |
EMDB tools
| Lookup | Description |
|---|---|
| EMDB Search | Search the Electron Microscopy Data Bank for cryo-EM density maps |
| EMDB Entry Details | Get reconstruction parameters, map downloads, and linked PDB structures for an EMDB entry |
These lookups run inside a chat turn: ask Ivy in plain language and it picks the PRIDE or EMDB lookup. There is no form or job to submit for them.
PRIDE: Proteomics Identifications Database
PRIDE is the world's largest public repository of mass spectrometry-based proteomics data, hosted by EMBL-EBI. It archives raw spectral data, peptide/protein identifications, post-translational modifications, and quantification results from published proteomics experiments.
What you can search
| Category | Examples |
|---|---|
| Protein targets | "BRCA1", "p53", "insulin receptor" |
| Diseases | "Alzheimer", "breast cancer", "diabetes" |
| Organisms | "Homo sapiens", "Mus musculus", "E. coli" |
| PTM types | "phosphorylation", "acetylation", "ubiquitination" |
| Instruments | "Orbitrap", "Q Exactive", "timsTOF" |
| Techniques | "TMT", "SILAC", "label-free" |
What you get back
- Project metadata: PXD accession, title, description, publication date
- Experimental details: Organisms, diseases, tissues, instruments, quantification methods
- Protocols: Sample processing and data processing protocols
- References: PubMed IDs and DOIs for associated publications
- Files: Raw data, processed results, search databases, and supplementary files with download links
EMDB: Electron Microscopy Data Bank
EMDB is the global archive for 3D electron microscopy density maps of biological specimens. It stores cryo-EM maps ranging from sub-2 Angstrom to lower resolutions, covering proteins, complexes, viruses, and cellular structures.
What you can search
| Category | Examples |
|---|---|
| Proteins/complexes | "ribosome", "proteasome", "RNA polymerase" |
| Viruses | "SARS-CoV-2 spike", "influenza hemagglutinin" |
| Organisms | "Homo sapiens", "Saccharomyces cerevisiae" |
| EMDB IDs | "EMD-13234", "EMD-1234" |
| Resolution range | Sub-3 Angstrom, sub-4 Angstrom |
What you get back
- Entry metadata: EMDB ID, title, authors, deposition/release dates
- Reconstruction: Resolution, method (single particle, tomography, etc.), software
- Sample: Organism, macromolecule names, copy numbers
- Cross-references: Linked PDB structure IDs and related EMDB entries
- Downloads: Direct map download URLs (gzipped MRC format)
What to ask for
| I want to... | Ivy answers it with |
|---|---|
| Find proteomics datasets for a disease | A PRIDE project search |
| Get protocols for a PRIDE project | PRIDE dataset details |
| Download raw MS data | PRIDE dataset details (includes a file listing with FTP URLs) |
| Find cryo-EM maps for a protein | An EMDB search |
| Get reconstruction parameters | EMDB entry details |
| Find high-resolution cryo-EM structures | An EMDB search with a resolution cutoff (for example "better than 3 Å") |
| Find PDB structures linked to a density map | EMDB entry details |
When to use other tools instead
| I want to... | Use this instead |
|---|---|
| Look up protein sequence/function | UniProt |
| Search for X-ray crystal structures | RCSB PDB search and download |
| Get or predict protein structure | An AlphaFold DB fetch or an ESMFold prediction |
| Find protein-protein interactions | A STRING interaction lookup |
| Search for gene information | Genomics lookups (Entrez, Ensembl) |
| Run peptide identification from raw MS data | Not currently supported (PRIDE provides pre-processed results) |
Licensing
| Database | License | Attribution |
|---|---|---|
| PRIDE | EMBL-EBI Terms of Use (open access) | Cite dataset DOI |
| EMDB | EMBL-EBI Terms of Use (open access) | Cite EMDB accession |
Citations
Perez-Riverol Y, et al. The PRIDE database resources in 2022: a hub for mass spectrometry-based proteomics evidences. Nucleic Acids Res. 2022;50(D1):D543-D552. doi: 10.1093/nar/gkab1038
Lawson CL, et al. EMDataBank unified data resource for 3DEM. Nucleic Acids Res. 2016;44(D1):D396-D403. doi: 10.1093/nar/gkv1126
Chat Usage
Example Prompts
- "Find PRIDE datasets studying phosphoproteomics in breast cancer"
- "Get the file listing and protocols for PXD012345"
- "Search EMDB for cryo-EM maps of the human proteasome"
- "What instruments were used in the latest Alzheimer's proteomics studies?"
- "Find sub-3 Angstrom cryo-EM structures of membrane proteins"
Workflow Chaining
- Feeds into: UniProt (protein annotation), PDB/AlphaFold (structural analysis), STRING (interaction networks), Literature search (PubMed via references)
- Accepts from: UniProt (protein accessions), Genomics tools (gene-to-protein), Literature search (dataset references from papers)
FAQ
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Which tool?
Match a scientific goal to the tool that answers it.
Workflows
Guided pipelines and copy-and-adapt prompt recipes for common goals.
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