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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].

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

Genes Reactome places in this human pathway, page 1 of 2
GeneACAD9AuthorityHGNC:21497Mapping file id28976 NCBI fileEvidenceTAS
GeneBCS1LAuthorityHGNC:1020Mapping file id617 NCBI fileEvidenceIEA
GeneCMC1AuthorityHGNC:28783Mapping file id152100 NCBI fileEvidenceTAS
GeneCOA1AuthorityHGNC:21868Mapping file id55744 NCBI fileEvidenceTAS
GeneCOA3AuthorityHGNC:24990Mapping file id28958 NCBI fileEvidenceTAS
GeneCOA5AuthorityHGNC:33848Mapping file id493753 NCBI fileEvidenceTAS
GeneCOQ10AAuthorityHGNC:26515Mapping file id93058 NCBI fileEvidenceTAS
GeneCOQ10BAuthorityHGNC:25819Mapping file id80219 NCBI fileEvidenceTAS
GeneCOX11AuthorityHGNC:2261Mapping file id1353 NCBI fileEvidenceTAS
GeneCOX14AuthorityHGNC:28216Mapping file id84987 NCBI fileEvidenceTAS
GeneCOX15AuthorityHGNC:2263Mapping file id1355 NCBI fileEvidenceTAS
GeneCOX16AuthorityHGNC:20213Mapping file id51241 NCBI fileEvidenceTAS
GeneCOX17AuthorityHGNC:2264Mapping file id10063 NCBI fileEvidenceTAS
GeneCOX18AuthorityHGNC:26801Mapping file id285521 NCBI fileEvidenceTAS
GeneCOX19AuthorityHGNC:28074Mapping file id90639 NCBI fileEvidenceTAS
GeneCOX20AuthorityHGNC:26970Mapping file id116228 NCBI fileEvidenceTAS
GeneCOX4I1AuthorityHGNC:2265Mapping file id1327 NCBI fileEvidenceTAS
GeneCOX4I2AuthorityHGNC:16232Mapping file id84701 NCBI fileEvidenceTAS
GeneCOX5AAuthorityHGNC:2267Mapping file id9377 NCBI fileEvidenceTAS
GeneCOX5BAuthorityHGNC:2269Mapping file id1329 NCBI fileEvidenceTAS
GeneCOX6A1AuthorityHGNC:2277Mapping file id1337 NCBI fileEvidenceTAS
GeneCOX6A2AuthorityHGNC:2279Mapping file id1339 NCBI fileEvidenceTAS
GeneCOX6B1AuthorityHGNC:2280Mapping file id1340 NCBI fileEvidenceTAS
GeneCOX6B2AuthorityHGNC:24380Mapping file id125965 NCBI fileEvidenceTAS
GeneCOX6CAuthorityHGNC:2285Mapping file id1345 NCBI fileEvidenceTAS
GeneCOX7A1AuthorityHGNC:2287Mapping file id1346 NCBI fileEvidenceTAS
GeneCOX7A2AuthorityHGNC:2288Mapping file id1347 NCBI fileEvidenceTAS
GeneCOX7A2LAuthorityHGNC:2289Mapping file id9167 NCBI fileEvidenceTAS
GeneCOX7BAuthorityHGNC:2291Mapping file id1349 NCBI fileEvidenceTAS
GeneCOX7CAuthorityHGNC:2292Mapping file id1350 NCBI fileEvidenceTAS
GeneCOX8AAuthorityHGNC:2294Mapping file id1351 NCBI fileEvidenceTAS
GeneCOX8CAuthorityHGNC:24382Mapping file id341947 NCBI fileEvidenceTAS
GeneCOXFA4AuthorityHGNC:7687Mapping file id4697 NCBI fileEvidenceTAS
GeneCYC1AuthorityHGNC:2579Mapping file id1537 NCBI fileEvidenceIEA, TAS
GeneCYCSAuthorityHGNC:19986Mapping file id54205 NCBI fileEvidenceTAS
GeneDMAC1AuthorityHGNC:30536Mapping file id90871 NCBI fileEvidenceTAS
GeneDMAC2AuthorityHGNC:25496Mapping file id55101 NCBI fileEvidenceTAS
GeneECSITAuthorityHGNC:29548Mapping file id51295 NCBI fileEvidenceTAS
GeneETFAAuthorityHGNC:3481Mapping file id2108 NCBI fileEvidenceTAS
GeneETFBAuthorityHGNC:3482Mapping file id2109 NCBI fileEvidenceTAS
GeneETFDHAuthorityHGNC:3483Mapping file id2110 NCBI fileEvidenceTAS
GeneFOXRED1AuthorityHGNC:26927Mapping file id55572 NCBI fileEvidenceTAS
GeneFXNAuthorityHGNC:3951Mapping file id2395 NCBI fileEvidenceTAS
GeneGOT1AuthorityHGNC:4432Mapping file id2805 NCBI fileEvidenceTAS
GeneGOT2AuthorityHGNC:4433Mapping file id2806 NCBI fileEvidenceTAS
GeneHCCSAuthorityHGNC:4837Mapping file id3052 NCBI fileEvidenceTAS
GeneHIGD1AAuthorityHGNC:29527Mapping file id25994 NCBI fileEvidenceTAS
GeneHIGD1CAuthorityHGNC:28044Mapping file id613227 NCBI fileEvidenceTAS
GeneHIGD2AAuthorityHGNC:28311Mapping file id192286 NCBI fileEvidenceTAS
GeneHSCBAuthorityHGNC:28913Mapping file id150274 NCBI fileEvidenceTAS
GeneHSPA9AuthorityHGNC:5244Mapping file id3313 NCBI fileEvidenceTAS
GeneISCUAuthorityHGNC:29882Mapping file id23479 NCBI fileEvidenceTAS
GeneLETM1AuthorityHGNC:6556Mapping file id3954 NCBI fileEvidenceIEA
GeneLYRM2AuthorityHGNC:25229Mapping file id57226 NCBI fileEvidenceTAS
GeneLYRM4AuthorityHGNC:21365Mapping file id57128 NCBI fileEvidenceTAS
GeneLYRM7AuthorityHGNC:28072Mapping file id90624 NCBI fileEvidenceTAS
GeneMDH1AuthorityHGNC:6970Mapping file id4190 NCBI fileEvidenceTAS
GeneMDH2AuthorityHGNC:6971Mapping file id4191 NCBI fileEvidenceTAS
GeneMT-CO1AuthorityHGNC:7419Mapping file id4512 NCBI fileEvidenceTAS
GeneMT-CO2AuthorityHGNC:7421Mapping file id4513 NCBI fileEvidenceTAS
GeneMT-CO3AuthorityHGNC:7422Mapping file id4514 NCBI fileEvidenceTAS
GeneMT-CYBAuthorityHGNC:7427Mapping file id4519 NCBI fileEvidenceIEA, TAS
GeneMT-ND1AuthorityHGNC:7455Mapping file id4535 NCBI fileEvidenceTAS
GeneMT-ND2AuthorityHGNC:7456Mapping file id4536 NCBI fileEvidenceTAS
GeneMT-ND3AuthorityHGNC:7458Mapping file id4537 NCBI fileEvidenceTAS
GeneMT-ND4AuthorityHGNC:7459Mapping file id4538 NCBI fileEvidenceTAS
GeneMT-ND5AuthorityHGNC:7461Mapping file id4540 NCBI fileEvidenceTAS
GeneMT-ND6AuthorityHGNC:7462Mapping file id4541 NCBI fileEvidenceTAS
GeneNDUFA1AuthorityHGNC:7683Mapping file id4694 NCBI fileEvidenceTAS
GeneNDUFA10AuthorityHGNC:7684Mapping file id4705 NCBI fileEvidenceTAS
GeneNDUFA11AuthorityHGNC:20371Mapping file id126328 NCBI fileEvidenceTAS
GeneNDUFA12AuthorityHGNC:23987Mapping file id55967 NCBI fileEvidenceTAS
GeneNDUFA13AuthorityHGNC:17194Mapping file id51079 NCBI fileEvidenceTAS
GeneNDUFA2AuthorityHGNC:7685Mapping file id4695 NCBI fileEvidenceTAS
GeneNDUFA3AuthorityHGNC:7686Mapping file id4696 NCBI fileEvidenceTAS
GeneNDUFA5AuthorityHGNC:7688Mapping file id4698 NCBI fileEvidenceTAS
GeneNDUFA6AuthorityHGNC:7690Mapping file id4700 NCBI fileEvidenceTAS
GeneNDUFA7AuthorityHGNC:7691Mapping file id4701 NCBI fileEvidenceTAS
GeneNDUFA8AuthorityHGNC:7692Mapping file id4702 NCBI fileEvidenceTAS
GeneNDUFA9AuthorityHGNC:7693Mapping file id4704 NCBI fileEvidenceTAS
GeneNDUFAB1AuthorityHGNC:7694Mapping file id4706 NCBI fileEvidenceTAS
GeneNDUFAF1AuthorityHGNC:18828Mapping file id51103 NCBI fileEvidenceTAS
GeneNDUFAF2AuthorityHGNC:28086Mapping file id91942 NCBI fileEvidenceTAS
GeneNDUFAF3AuthorityHGNC:29918Mapping file id25915 NCBI fileEvidenceTAS
GeneNDUFAF4AuthorityHGNC:21034Mapping file id29078 NCBI fileEvidenceTAS
GeneNDUFAF5AuthorityHGNC:15899Mapping file id79133 NCBI fileEvidenceTAS
GeneNDUFAF6AuthorityHGNC:28625Mapping file id137682 NCBI fileEvidenceTAS
GeneNDUFAF7AuthorityHGNC:28816Mapping file id55471 NCBI fileEvidenceTAS
GeneNDUFAF8AuthorityHGNC:33551Mapping file id284184 NCBI fileEvidenceTAS
GeneNDUFB1AuthorityHGNC:7695Mapping file id4707 NCBI fileEvidenceTAS
GeneNDUFB10AuthorityHGNC:7696Mapping file id4716 NCBI fileEvidenceTAS
GeneNDUFB11AuthorityHGNC:20372Mapping file id54539 NCBI fileEvidenceTAS
GeneNDUFB2AuthorityHGNC:7697Mapping file id4708 NCBI fileEvidenceTAS
GeneNDUFB3AuthorityHGNC:7698Mapping file id4709 NCBI fileEvidenceTAS
GeneNDUFB4AuthorityHGNC:7699Mapping file id4710 NCBI fileEvidenceTAS
GeneNDUFB5AuthorityHGNC:7700Mapping file id4711 NCBI fileEvidenceTAS
GeneNDUFB6AuthorityHGNC:7701Mapping file id4712 NCBI fileEvidenceTAS
GeneNDUFB7AuthorityHGNC:7702Mapping file id4713 NCBI fileEvidenceTAS
GeneNDUFB8AuthorityHGNC:7703Mapping file id4714 NCBI fileEvidenceTAS
GeneNDUFB9AuthorityHGNC:7704Mapping file id4715 NCBI fileEvidenceTAS

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.