KEGG APIs

A few useful KEGG APIs

Get the reference names for K numbers

https://rest.kegg.jp/list/ko

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ko:K00001	E1.1.1.1, adh; alcohol dehydrogenase [EC:1.1.1.1]
ko:K00002	AKR1A1, adh; alcohol dehydrogenase (NADP+) [EC:1.1.1.2]
ko:K00003	E1.1.1.3; homoserine dehydrogenase [EC:1.1.1.3]
...

Get the names of reference pathways

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path:map00010	Glycolysis / Gluconeogenesis
path:map00020	Citrate cycle (TCA cycle)
path:map00030	Pentose phosphate pathway
path:map00040	Pentose and glucuronate interconversions
...

https://rest.kegg.jp/link/ko/map03013 (K orthologs in a map)

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...
path:map03013	ko:K00784
path:map03013	ko:K00974
path:map03013	ko:K01164
...

get K and ko links

https://rest.kegg.jp/link/pathway/ko

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ko:K00001	path:map00010
ko:K00001	path:ko00010
ko:K00002	path:map00010
ko:K00002	path:ko00010
...

Pathway mapping and customisation

https://www.genome.jp/kegg/mapper.html include various tools for mapping and coloring

or to open a specific pathway (with prefix “map” as initially no color shown, e.g. https://www.genome.jp/kegg-bin/show_pathway?map=map04010) and use “User data mapping”:

An input example

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K04380
K04392
K04393
K04405
K04409
K04412	green	red
K04414	green	red
K04416
K04422
K04429
K04430
K04431	purple	red

KEGGpaty

Or use the weblink api: https://www.kegg.jp/kegg/docs/weblink.html#map2

https://www.kegg.jp/kegg-bin/show_pathway?map=<mapid>&multi_query=<dataset>[&nocolor=1]

e.g., https://www.kegg.jp/kegg-bin/show_pathway?map=map04010&multi_query=K04412+green,black%0d%0aK04431+purple