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. 2020 Nov 6;49(D1):D570–D574. doi: 10.1093/nar/gkaa992

Table 2.

Sources and numbers of reactions found in the MNXref 4.0 reconciliation. Secondary and deprecated identifiers are not counted here.

Number of entries in
Resources Prefixesa Total GSMs
BiGG (1) biggR 28167* 41863*
KEGG (5) keggR 11161 3508
MetaCYC (7) metacycR 17208 4898
RHEA (9) rheaR b 12510 3989
SABIO-RK (10) sabiorkR 8118 2319
TheSEED (11) seedR 43855* 19230*
MetaNetX/MNXref 4.0 37103 11968
ratio c 3.26 6.87
others d 6463*

* Reactions with specific compartments (vs generic compartments).

aThese prefixes are used to refer external resources in the TAB-delimited and RDF distributions of MNXref.

bOnly master reactions of RHEA are counted here.

cAverage number of identifiers in external databases per MNXref entry.

dReactions only found in models, but most of them are formulated with metabolites in MNXref.