Statistics for release 118 (2021-04-07)

The number of reactions given here is the number of reaction quartets.

Unique reactions: 13,550

Unique reaction participants: 11,793

Reaction participants help_outline
Type Participants Reactions
Small molecule (ChEBI) 9,996 13,495
Macromolecule (Rhea) 1,566 2,451
Polymer (Rhea) 231 272
Reactions by status help_outline
Approved 13,528
Preliminary 22
Reactions by qualifier
Chemically balanced 13,540
Transport 625
Linked database records
Database Data type Origin Unique database IDs Links Total reactions
EcoCyc Reaction Curated 1,527 1,570 1,551
MetaCyc Reaction Curated 7,978 8,290 8,130
Reactome Reaction Computed via ChEBI IDs 881 926 602
KEGG Reaction Curated 6,455 6,590 6,561
Enzyme EC number Curated 5,806 7,239 6,980
PubMed Bibliographic citation Curated 15,421 28,909 12,441
ChEBI Compound Curated 10,958 65,367 13,550