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Pathway Human Homo sapiens

Metabolic disorders of biological oxidation enzymes

R-HSA-5579029 in Reactome release 97: under Diseases of metabolism, with 34 genes placed in it by the mapping files and 31 child pathways in the hierarchy.

The same number in the other species

Reactome writes the mouse and rat events it infers from a human pathway under the human number with the species token. A door opens only where that species' own list in this release holds the id; neither of the other two lists holds it. Whether the event was inferred from this one is what the record says.

01The record

Reactome's own record of this pathway

What this tells you

The pathway list, the hierarchy and the genes on this page are read from the files Reactome publishes for Reactome release 97, built into this site on 2026-09-09: the pathway list, the hierarchy relationship file and the two gene mapping files. The record card is the one live read, Reactome's own record of this pathway.

Reactome's download page describes the mapping files: Mapping files link the source database identifier to the lowest level pathway diagram or subset of the pathway, all levels of the pathway hierarchy or database identifier to all reactions. [R13] The gene list here is the all-levels mapping of NCBI Gene ids, filled from the all-levels mapping of Ensembl ids where the NCBI file has no row for a gene; each row names which file it came from by the shape of its source id. Each row carries the evidence codes the file writes for it, as written and unranked, and both where the file writes both; no page of Reactome's documentation the survey read defines the codes, so this page does not expand them. A gene id the identity files do not name is kept as the source's own id with no door rather than turned into a symbol.

On citing what a search finds, Reactome says: It should be remembered that while we strive to contain the most current and accurate data, Reactome should not be used in citations where other primary sources of information are available. [R12] The record card prints the literature Reactome attaches to a curated pathway for that reason. The data are public domain: All data in the Reactome database and files derived from that data are licensed under the Creative Commons Public Domain Dedication (CC0). User may copy, modify, and distribute these data, even for commercial purposes, without asking for permission. Attribution is encouraged but not required. [R10] The pathway illustrations are licensed apart, under CC BY 4.0, and none is shown here.

A gene on this list is one Reactome places in this pathway in this release, and that is all the row says: it does not say the gene is expressed in a tissue or associated with a disease, which are the other two explorers' questions, read from other sources. Reactome's papers of record are [R01] [R02].

  1. [R01] Ragueneau E, Gong C, Sinquin P, Sevilla C, Beavers D, Grentner A, et al. (2026). The Reactome Knowledgebase 2026. Nucleic Acids Research 54:D673-D681. PMID 41251150, doi 10.1093/nar/gkaf1223.
  2. [R02] Milacic M, Beavers D, Conley P, Gong C, Gillespie M, Griss J, et al. (2024). The Reactome Pathway Knowledgebase 2024. Nucleic Acids Research 52:D672-D678. PMID 37941124, doi 10.1093/nar/gkad1025.
  3. [R10] Reactome, reactome.org. License Agreement. https://reactome.org/license, read 2026-09-09.
  4. [R12] Reactome, reactome.org. Citing us. https://reactome.org/cite, read 2026-09-09.
  5. [R13] Reactome, reactome.org. Download. https://reactome.org/download-data, read 2026-09-09.
Reading this pathway's record from Reactome (the pathway record).Still reading. A first read of a pathway can take a while; this page waits up to 35 seconds for it, and its scripts then bring in the panel, or a line saying what did not arrive.

02The genes

Genes Reactome places in this human pathway

The mapping files place 34 genes in this human pathway; showing 1 to 34, in pages of 100, sorted by symbol for reading. The order carries no ranking.

Genes Reactome places in this human pathway, page 1 of 1
GeneACY1AuthorityHGNC:177Mapping file id95 NCBI fileEvidenceTAS
GeneAHCYAuthorityHGNC:343Mapping file id191 NCBI fileEvidenceTAS
GeneCYP11A1AuthorityHGNC:2590Mapping file id1583 NCBI fileEvidenceTAS
GeneCYP11B1AuthorityHGNC:2591Mapping file id1584 NCBI fileEvidenceTAS
GeneCYP11B2AuthorityHGNC:2592Mapping file id1585 NCBI fileEvidenceTAS
GeneCYP17A1AuthorityHGNC:2593Mapping file id1586 NCBI fileEvidenceTAS
GeneCYP19A1AuthorityHGNC:2594Mapping file id1588 NCBI fileEvidenceTAS
GeneCYP1B1AuthorityHGNC:2597Mapping file id1545 NCBI fileEvidenceTAS
GeneCYP21A2AuthorityHGNC:2600Mapping file id1589 NCBI fileEvidenceTAS
GeneCYP24A1AuthorityHGNC:2602Mapping file id1591 NCBI fileEvidenceTAS
GeneCYP26B1AuthorityHGNC:20581Mapping file id56603 NCBI fileEvidenceTAS
GeneCYP26C1AuthorityHGNC:20577Mapping file id340665 NCBI fileEvidenceTAS
GeneCYP27A1AuthorityHGNC:2605Mapping file id1593 NCBI fileEvidenceTAS
GeneCYP27B1AuthorityHGNC:2606Mapping file id1594 NCBI fileEvidenceTAS
GeneCYP2R1AuthorityHGNC:20580Mapping file id120227 NCBI fileEvidenceTAS
GeneCYP2U1AuthorityHGNC:20582Mapping file id113612 NCBI fileEvidenceTAS
GeneCYP4F22AuthorityHGNC:26820Mapping file id126410 NCBI fileEvidenceTAS
GeneCYP7B1AuthorityHGNC:2652Mapping file id9420 NCBI fileEvidenceTAS
GeneFDX1AuthorityHGNC:3638Mapping file id2230 NCBI fileEvidenceTAS
GeneFDX2AuthorityHGNC:30546Mapping file id112812 NCBI fileEvidenceTAS
GeneFDXRAuthorityHGNC:3642Mapping file id2232 NCBI fileEvidenceTAS
GeneFMO3AuthorityHGNC:3771Mapping file id2328 NCBI fileEvidenceTAS
GeneGCLCAuthorityHGNC:4311Mapping file id2729 NCBI fileEvidenceTAS
GeneGCLMAuthorityHGNC:4312Mapping file id2730 NCBI fileEvidenceTAS
GeneGGT1AuthorityHGNC:4250Mapping file id2678 NCBI fileEvidenceTAS
GeneGSSAuthorityHGNC:4624Mapping file id2937 NCBI fileEvidenceTAS
GeneMAOAAuthorityHGNC:6833Mapping file id4128 NCBI fileEvidenceTAS
GeneMAT1AAuthorityHGNC:6903Mapping file id4143 NCBI fileEvidenceTAS
GeneOPLAHAuthorityHGNC:8149Mapping file id26873 NCBI fileEvidenceTAS
GeneSLC35D1AuthorityHGNC:20800Mapping file id23169 NCBI fileEvidenceTAS
GeneTBXAS1AuthorityHGNC:11609Mapping file id6916 NCBI fileEvidenceTAS
GeneTPMTAuthorityHGNC:12014Mapping file id7172 NCBI fileEvidenceTAS
GeneUGT1A1AuthorityHGNC:12530Mapping file id54658 NCBI fileEvidenceTAS
GeneUGT1A4AuthorityHGNC:12536Mapping file id54657 NCBI fileEvidenceTAS

Evidence codes on this page: TAS, as the mapping file writes them; a row carrying two was written twice by the file, once under each. The mapping file id says which file placed the gene: an NCBI Gene id from NCBI2Reactome_All_Levels.txt, an Ensembl gene id from Ensembl2Reactome_All_Levels.txt. The two files can disagree about a code, so a row's codes are the one file's view. Measured by this site's build over this release on 2026-09-09: of the 138,908 human pathway-gene pairs both files place, 207 (0.149 per cent, over 47 genes) carry TAS in the Ensembl file where the NCBI rows carry IEA alone.

  • Reactome mapping files, the human rows for this pathway · Reactome release 97 · read · Reactome downloads"NCBI2Reactome_All_Levels.txt" and "Ensembl2Reactome_All_Levels.txt", Reactome, release 97, https://reactome.org/download-data/ (date of access 2026-09-09). Data CC0; attribution encouraged.

03The hierarchy

Parents and children in this release's hierarchy

Children

Reactome's hierarchy is a graph rather than a tree: a pathway can sit under more than one parent, and the gene counts are each pathway's own placements at every level under it, so a parent's count is not the sum of its children's.

  • Reactome, the human pathway list and hierarchy relationship file · Reactome release 97 · read · Reactome downloads"ReactomePathways.txt" and "ReactomePathwaysRelation.txt", Reactome, release 97, https://reactome.org/download-data/ (date of access 2026-09-09). Data CC0; attribution encouraged.