Table 1. Cross-references in Rhea (release 53).
| Database | Ref. | Data type | Origin | Total | Unique |
|---|---|---|---|---|---|
| ChEBI http://www.ebi.ac.uk/chebi | (2) | Compound | Manually curated | 36 928 | 6720 |
| IntEnz http://www.ebi.ac.uk/intenz | (10) | EC number | Manually curated | 4955 | 4110 |
| MetaCyc http://metacyc.org | (20) | Reaction | Manually curated | 4407 | 4279 |
| EcoCyc http://ecocyc.org | (19) | Reaction | Manually curated | 1136 | 1109 |
| KEGG http://www.genome.jp/kegg | (18) | Reaction | Manually curated | 3724 | 3641 |
| UniPathway http://www.unipathway.org/pathway | (21) | Reaction | Manually curated | 1878 | 1835 |
| Reactome http://www.reactome.org | (17) | Reaction | Automatic via ChEBI IDs | 608 | 582 |
| UniProtKB www.uniprot.org | (15) | Protein | Automatic via EC numbers | 22 0058 | 16 1289 |
| PubMed http://www.ncbi.nlm.nih.gov/pubmed | Bibliographic citation | Manually curated | 5164 | 2766 |