Pathway Human Homo sapiens
Respiratory electron transport
R-HSA-611105 in Reactome release 97: under Aerobic respiration and respiratory electron transport, with 159 genes placed in it by the mapping files and 4 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: R-MMU-611105 (mouse), R-RNO-611105 (rat). 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 159 genes in this human pathway; showing 101 to 159, in pages of 100, sorted by symbol for reading. The order carries no ranking.
| Gene | Authority id | Mapping file id | Evidence codes |
|---|---|---|---|
| GeneNDUFC1 | AuthorityHGNC:7705 | Mapping file id4717 NCBI file | EvidenceTAS |
| GeneNDUFC2 | AuthorityHGNC:7706 | Mapping file id4718 NCBI file | EvidenceTAS |
| GeneNDUFS1 | AuthorityHGNC:7707 | Mapping file id4719 NCBI file | EvidenceTAS |
| GeneNDUFS2 | AuthorityHGNC:7708 | Mapping file id4720 NCBI file | EvidenceTAS |
| GeneNDUFS3 | AuthorityHGNC:7710 | Mapping file id4722 NCBI file | EvidenceTAS |
| GeneNDUFS4 | AuthorityHGNC:7711 | Mapping file id4724 NCBI file | EvidenceTAS |
| GeneNDUFS5 | AuthorityHGNC:7712 | Mapping file id4725 NCBI file | EvidenceTAS |
| GeneNDUFS6 | AuthorityHGNC:7713 | Mapping file id4726 NCBI file | EvidenceTAS |
| GeneNDUFS7 | AuthorityHGNC:7714 | Mapping file id374291 NCBI file | EvidenceTAS |
| GeneNDUFS8 | AuthorityHGNC:7715 | Mapping file id4728 NCBI file | EvidenceTAS |
| GeneNDUFV1 | AuthorityHGNC:7716 | Mapping file id4723 NCBI file | EvidenceTAS |
| GeneNDUFV2 | AuthorityHGNC:7717 | Mapping file id4729 NCBI file | EvidenceTAS |
| GeneNDUFV3 | AuthorityHGNC:7719 | Mapping file id4731 NCBI file | EvidenceTAS |
| GeneNFS1 | AuthorityHGNC:15910 | Mapping file id9054 NCBI file | EvidenceTAS |
| GeneNUBPL | AuthorityHGNC:20278 | Mapping file id80224 NCBI file | EvidenceTAS |
| GeneOXA1L | AuthorityHGNC:8526 | Mapping file id5018 NCBI file | EvidenceTAS |
| GenePET100 | AuthorityHGNC:40038 | Mapping file id100131801 NCBI file | EvidenceTAS |
| GenePET117 | AuthorityHGNC:40045 | Mapping file id100303755 NCBI file | EvidenceTAS |
| GenePNKD | AuthorityHGNC:9153 | Mapping file id25953 NCBI file | EvidenceTAS |
| GenePYURF | AuthorityHGNC:44317 | Mapping file id100996939 NCBI file | EvidenceTAS |
| GeneRAB5IF | AuthorityHGNC:15870 | Mapping file id55969 NCBI file | EvidenceTAS |
| GeneSCO1 | AuthorityHGNC:10603 | Mapping file id6341 NCBI file | EvidenceTAS |
| GeneSCO2 | AuthorityHGNC:10604 | Mapping file id9997 NCBI file | EvidenceTAS |
| GeneSDHA | AuthorityHGNC:10680 | Mapping file id6389 NCBI file | EvidenceIEA |
| GeneSDHB | AuthorityHGNC:10681 | Mapping file id6390 NCBI file | EvidenceIEA |
| GeneSDHC | AuthorityHGNC:10682 | Mapping file id6391 NCBI file | EvidenceIEA |
| GeneSDHD | AuthorityHGNC:10683 | Mapping file id6392 NCBI file | EvidenceIEA |
| GeneSFXN4 | AuthorityHGNC:16088 | Mapping file id119559 NCBI file | EvidenceTAS |
| GeneSLC25A11 | AuthorityHGNC:10981 | Mapping file id8402 NCBI file | EvidenceTAS |
| GeneSLC25A12 | AuthorityHGNC:10982 | Mapping file id8604 NCBI file | EvidenceTAS |
| GeneSLC25A13 | AuthorityHGNC:10983 | Mapping file id10165 NCBI file | EvidenceTAS |
| GeneSLC25A18 | AuthorityHGNC:10988 | Mapping file id83733 NCBI file | EvidenceTAS |
| GeneSLC25A22 | AuthorityHGNC:19954 | Mapping file id79751 NCBI file | EvidenceTAS |
| GeneSMIM20 | AuthorityHGNC:37260 | Mapping file id389203 NCBI file | EvidenceTAS |
| GeneSURF1 | AuthorityHGNC:11474 | Mapping file id6834 NCBI file | EvidenceTAS |
| GeneTACO1 | AuthorityHGNC:24316 | Mapping file id51204 NCBI file | EvidenceTAS |
| GeneTIMM21 | AuthorityHGNC:25010 | Mapping file id29090 NCBI file | EvidenceTAS |
| GeneTIMMDC1 | AuthorityHGNC:1321 | Mapping file id51300 NCBI file | EvidenceTAS |
| GeneTMEM126A | AuthorityHGNC:25382 | Mapping file id84233 NCBI file | EvidenceTAS |
| GeneTMEM126B | AuthorityHGNC:30883 | Mapping file id55863 NCBI file | EvidenceTAS |
| GeneTMEM177 | AuthorityHGNC:28143 | Mapping file id80775 NCBI file | EvidenceTAS |
| GeneTMEM186 | AuthorityHGNC:24530 | Mapping file id25880 NCBI file | EvidenceTAS |
| GeneTMEM223 | AuthorityHGNC:28464 | Mapping file id79064 NCBI file | EvidenceTAS |
| GeneTRAP1 | AuthorityHGNC:16264 | Mapping file id10131 NCBI file | EvidenceIEA |
| GeneTTC19 | AuthorityHGNC:26006 | Mapping file id54902 NCBI file | EvidenceTAS |
| GeneUQCC1 | AuthorityHGNC:15891 | Mapping file id55245 NCBI file | EvidenceIEA |
| GeneUQCC2 | AuthorityHGNC:21237 | Mapping file id84300 NCBI file | EvidenceIEA |
| GeneUQCC3 | AuthorityHGNC:34399 | Mapping file id790955 NCBI file | EvidenceIEA |
| GeneUQCC5 | AuthorityHGNC:37257 | Mapping file id440957 NCBI file | EvidenceIEA |
| GeneUQCC6 | AuthorityHGNC:34450 | Mapping file id728568 NCBI file | EvidenceIEA |
| GeneUQCR10 | AuthorityHGNC:30863 | Mapping file id29796 NCBI file | EvidenceIEA, TAS |
| GeneUQCR11 | AuthorityHGNC:30862 | Mapping file id10975 NCBI file | EvidenceIEA, TAS |
| GeneUQCRB | AuthorityHGNC:12582 | Mapping file id7381 NCBI file | EvidenceIEA, TAS |
| GeneUQCRC1 | AuthorityHGNC:12585 | Mapping file id7384 NCBI file | EvidenceIEA, TAS |
| GeneUQCRC2 | AuthorityHGNC:12586 | Mapping file id7385 NCBI file | EvidenceIEA, TAS |
| GeneUQCRFS1 | AuthorityHGNC:12587 | Mapping file id7386 NCBI file | EvidenceIEA, TAS |
| GeneUQCRH | AuthorityHGNC:12590 | Mapping file id7388 NCBI file | EvidenceIEA, TAS |
| GeneUQCRHL | AuthorityHGNC:51714 | Mapping file id440567 NCBI file | EvidenceIEA, TAS |
| GeneUQCRQ | AuthorityHGNC:29594 | Mapping file id27089 NCBI file | EvidenceIEA, TAS |
Evidence codes on this page: IEA, 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
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.