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].
- [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.
- [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.
- [R10] Reactome, reactome.org. License Agreement. https://reactome.org/license, read 2026-09-09.
- [R12] Reactome, reactome.org. Citing us. https://reactome.org/cite, read 2026-09-09.
- [R13] Reactome, reactome.org. Download. https://reactome.org/download-data, read 2026-09-09.
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.
| Gene | Authority id | Mapping file id | Evidence codes |
|---|---|---|---|
| GeneACY1 | AuthorityHGNC:177 | Mapping file id95 NCBI file | EvidenceTAS |
| GeneAHCY | AuthorityHGNC:343 | Mapping file id191 NCBI file | EvidenceTAS |
| GeneCYP11A1 | AuthorityHGNC:2590 | Mapping file id1583 NCBI file | EvidenceTAS |
| GeneCYP11B1 | AuthorityHGNC:2591 | Mapping file id1584 NCBI file | EvidenceTAS |
| GeneCYP11B2 | AuthorityHGNC:2592 | Mapping file id1585 NCBI file | EvidenceTAS |
| GeneCYP17A1 | AuthorityHGNC:2593 | Mapping file id1586 NCBI file | EvidenceTAS |
| GeneCYP19A1 | AuthorityHGNC:2594 | Mapping file id1588 NCBI file | EvidenceTAS |
| GeneCYP1B1 | AuthorityHGNC:2597 | Mapping file id1545 NCBI file | EvidenceTAS |
| GeneCYP21A2 | AuthorityHGNC:2600 | Mapping file id1589 NCBI file | EvidenceTAS |
| GeneCYP24A1 | AuthorityHGNC:2602 | Mapping file id1591 NCBI file | EvidenceTAS |
| GeneCYP26B1 | AuthorityHGNC:20581 | Mapping file id56603 NCBI file | EvidenceTAS |
| GeneCYP26C1 | AuthorityHGNC:20577 | Mapping file id340665 NCBI file | EvidenceTAS |
| GeneCYP27A1 | AuthorityHGNC:2605 | Mapping file id1593 NCBI file | EvidenceTAS |
| GeneCYP27B1 | AuthorityHGNC:2606 | Mapping file id1594 NCBI file | EvidenceTAS |
| GeneCYP2R1 | AuthorityHGNC:20580 | Mapping file id120227 NCBI file | EvidenceTAS |
| GeneCYP2U1 | AuthorityHGNC:20582 | Mapping file id113612 NCBI file | EvidenceTAS |
| GeneCYP4F22 | AuthorityHGNC:26820 | Mapping file id126410 NCBI file | EvidenceTAS |
| GeneCYP7B1 | AuthorityHGNC:2652 | Mapping file id9420 NCBI file | EvidenceTAS |
| GeneFDX1 | AuthorityHGNC:3638 | Mapping file id2230 NCBI file | EvidenceTAS |
| GeneFDX2 | AuthorityHGNC:30546 | Mapping file id112812 NCBI file | EvidenceTAS |
| GeneFDXR | AuthorityHGNC:3642 | Mapping file id2232 NCBI file | EvidenceTAS |
| GeneFMO3 | AuthorityHGNC:3771 | Mapping file id2328 NCBI file | EvidenceTAS |
| GeneGCLC | AuthorityHGNC:4311 | Mapping file id2729 NCBI file | EvidenceTAS |
| GeneGCLM | AuthorityHGNC:4312 | Mapping file id2730 NCBI file | EvidenceTAS |
| GeneGGT1 | AuthorityHGNC:4250 | Mapping file id2678 NCBI file | EvidenceTAS |
| GeneGSS | AuthorityHGNC:4624 | Mapping file id2937 NCBI file | EvidenceTAS |
| GeneMAOA | AuthorityHGNC:6833 | Mapping file id4128 NCBI file | EvidenceTAS |
| GeneMAT1A | AuthorityHGNC:6903 | Mapping file id4143 NCBI file | EvidenceTAS |
| GeneOPLAH | AuthorityHGNC:8149 | Mapping file id26873 NCBI file | EvidenceTAS |
| GeneSLC35D1 | AuthorityHGNC:20800 | Mapping file id23169 NCBI file | EvidenceTAS |
| GeneTBXAS1 | AuthorityHGNC:11609 | Mapping file id6916 NCBI file | EvidenceTAS |
| GeneTPMT | AuthorityHGNC:12014 | Mapping file id7172 NCBI file | EvidenceTAS |
| GeneUGT1A1 | AuthorityHGNC:12530 | Mapping file id54658 NCBI file | EvidenceTAS |
| GeneUGT1A4 | AuthorityHGNC:12536 | Mapping file id54657 NCBI file | EvidenceTAS |
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
- Defective ACY1 causes encephalopathyR-HSA-55790071 genes
- Defective AHCY causes HMAHCHDR-HSA-55789971 genes
- Defective CYP11A1 causes AICSRR-HSA-55790264 genes
- Defective CYP11B1 causes AH4R-HSA-55790171 genes
- Defective CYP11B2 causes CMO-1 deficiencyR-HSA-55790091 genes
- Defective CYP17A1 causes AH5R-HSA-55790281 genes
- Defective CYP19A1 causes AEXSR-HSA-55790301 genes
- Defective CYP1B1 causes GlaucomaR-HSA-55790001 genes
- Defective CYP21A2 causes AH3R-HSA-55790211 genes
- Defective CYP24A1 causes HCAIR-HSA-55790101 genes
- Defective CYP26B1 causes RHFCAR-HSA-55790151 genes
- Defective CYP26C1 causes FFDD4R-HSA-55790041 genes
- Defective CYP27A1 causes CTXR-HSA-55789961 genes
- Defective CYP27B1 causes VDDR1AR-HSA-55790141 genes
- Defective CYP27B1 causes VDDR1BR-HSA-55790271 genes
- Defective CYP2U1 causes SPG56R-HSA-55790111 genes
- Defective CYP4F22 causes ARCI5R-HSA-55790051 genes
- Defective CYP7B1 causes SPG5A and CBAS3R-HSA-55790131 genes
- Defective FMO3 causes TMAUR-HSA-55790191 genes
- Defective GCLC causes HAGGSDR-HSA-55789992 genes
- Defective GGT1 causes GLUTHR-HSA-55790221 genes
- Defective GGT1 in aflatoxin detoxification causes GLUTHR-HSA-90359681 genes
- Defective GSS causes GSS deficiencyR-HSA-55790061 genes
- Defective MAOA causes BRUNSR-HSA-55790121 genes
- Defective MAT1A causes MATDR-HSA-55790241 genes
- Defective OPLAH causes OPLAHDR-HSA-55789981 genes
- Defective SLC35D1 causes SCHBCKDR-HSA-55790201 genes
- Defective TBXAS1 causes GHDDR-HSA-55790321 genes
- Defective TPMT causes TPMT deficiencyR-HSA-55789951 genes
- Defective UGT1A1 causes hyperbilirubinemiaR-HSA-55790021 genes
- Defective UGT1A4 causes hyperbilirubinemiaR-HSA-55790161 genes
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.