Pathway Human Homo sapiens
Cellular responses to stress
R-HSA-2262752 in Reactome release 97: under Cellular responses to stimuli, with 815 genes placed in it by the mapping files and 11 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-2262752 (mouse), R-RNO-2262752 (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 815 genes in this human pathway; showing 301 to 400, in pages of 100, sorted by symbol for reading. The order carries no ranking.
| Gene | Authority id | Mapping file id | Evidence codes |
|---|---|---|---|
| GeneH2AZ2 | AuthorityHGNC:20664 | Mapping file id94239 NCBI file | EvidenceTAS |
| GeneH2BC1 | AuthorityHGNC:18730 | Mapping file id255626 NCBI file | EvidenceTAS |
| GeneH2BC10 | AuthorityHGNC:4756 | Mapping file id8346 NCBI file | EvidenceTAS |
| GeneH2BC11 | AuthorityHGNC:4761 | Mapping file id8970 NCBI file | EvidenceTAS |
| GeneH2BC12 | AuthorityHGNC:13954 | Mapping file id85236 NCBI file | EvidenceTAS |
| GeneH2BC12L | AuthorityHGNC:4762 | Mapping file id54145 NCBI file | EvidenceTAS |
| GeneH2BC13 | AuthorityHGNC:4748 | Mapping file id8340 NCBI file | EvidenceTAS |
| GeneH2BC14 | AuthorityHGNC:4750 | Mapping file id8342 NCBI file | EvidenceTAS |
| GeneH2BC15 | AuthorityHGNC:4749 | Mapping file id8341 NCBI file | EvidenceTAS |
| GeneH2BC17 | AuthorityHGNC:4758 | Mapping file id8348 NCBI file | EvidenceTAS |
| GeneH2BC21 | AuthorityHGNC:4760 | Mapping file id8349 NCBI file | EvidenceTAS |
| GeneH2BC26 | AuthorityHGNC:20514 | Mapping file id128312 NCBI file | EvidenceTAS |
| GeneH2BC3 | AuthorityHGNC:4751 | Mapping file id3018 NCBI file | EvidenceTAS |
| GeneH2BC4 | AuthorityHGNC:4757 | Mapping file id8347 NCBI file | EvidenceTAS |
| GeneH2BC5 | AuthorityHGNC:4747 | Mapping file id3017 NCBI file | EvidenceTAS |
| GeneH2BC6 | AuthorityHGNC:4753 | Mapping file id8344 NCBI file | EvidenceTAS |
| GeneH2BC7 | AuthorityHGNC:4752 | Mapping file id8343 NCBI file | EvidenceTAS |
| GeneH2BC8 | AuthorityHGNC:4746 | Mapping file id8339 NCBI file | EvidenceTAS |
| GeneH2BC9 | AuthorityHGNC:4755 | Mapping file id8345 NCBI file | EvidenceTAS |
| GeneH3-3A | AuthorityHGNC:4764 | Mapping file id3020 NCBI file | EvidenceTAS |
| GeneH3-3B | AuthorityHGNC:4765 | Mapping file id3021 NCBI file | EvidenceTAS |
| GeneH3-4 | AuthorityHGNC:4778 | Mapping file id8290 NCBI file | EvidenceTAS |
| GeneH3C1 | AuthorityHGNC:4766 | Mapping file id8350 NCBI file | EvidenceTAS |
| GeneH3C10 | AuthorityHGNC:4775 | Mapping file id8357 NCBI file | EvidenceTAS |
| GeneH3C11 | AuthorityHGNC:4771 | Mapping file id8354 NCBI file | EvidenceTAS |
| GeneH3C12 | AuthorityHGNC:4774 | Mapping file id8356 NCBI file | EvidenceTAS |
| GeneH3C13 | AuthorityHGNC:25311 | Mapping file id653604 NCBI file | EvidenceTAS |
| GeneH3C14 | AuthorityHGNC:20503 | Mapping file id126961 NCBI file | EvidenceTAS |
| GeneH3C15 | AuthorityHGNC:20505 | Mapping file id333932 NCBI file | EvidenceTAS |
| GeneH3C2 | AuthorityHGNC:4776 | Mapping file id8358 NCBI file | EvidenceTAS |
| GeneH3C3 | AuthorityHGNC:4768 | Mapping file id8352 NCBI file | EvidenceTAS |
| GeneH3C4 | AuthorityHGNC:4767 | Mapping file id8351 NCBI file | EvidenceTAS |
| GeneH3C6 | AuthorityHGNC:4769 | Mapping file id8353 NCBI file | EvidenceTAS |
| GeneH3C7 | AuthorityHGNC:4773 | Mapping file id8968 NCBI file | EvidenceTAS |
| GeneH3C8 | AuthorityHGNC:4772 | Mapping file id8355 NCBI file | EvidenceTAS |
| GeneH4C1 | AuthorityHGNC:4781 | Mapping file id8359 NCBI file | EvidenceTAS |
| GeneH4C11 | AuthorityHGNC:4785 | Mapping file id8363 NCBI file | EvidenceTAS |
| GeneH4C12 | AuthorityHGNC:4784 | Mapping file id8362 NCBI file | EvidenceTAS |
| GeneH4C13 | AuthorityHGNC:4791 | Mapping file id8368 NCBI file | EvidenceTAS |
| GeneH4C14 | AuthorityHGNC:4794 | Mapping file id8370 NCBI file | EvidenceTAS |
| GeneH4C15 | AuthorityHGNC:29607 | Mapping file id554313 NCBI file | EvidenceTAS |
| GeneH4C16 | AuthorityHGNC:20510 | Mapping file id121504 NCBI file | EvidenceTAS |
| GeneH4C2 | AuthorityHGNC:4789 | Mapping file id8366 NCBI file | EvidenceTAS |
| GeneH4C3 | AuthorityHGNC:4787 | Mapping file id8364 NCBI file | EvidenceTAS |
| GeneH4C4 | AuthorityHGNC:4782 | Mapping file id8360 NCBI file | EvidenceTAS |
| GeneH4C5 | AuthorityHGNC:4790 | Mapping file id8367 NCBI file | EvidenceTAS |
| GeneH4C6 | AuthorityHGNC:4783 | Mapping file id8361 NCBI file | EvidenceTAS |
| GeneH4C8 | AuthorityHGNC:4788 | Mapping file id8365 NCBI file | EvidenceTAS |
| GeneH4C9 | AuthorityHGNC:4793 | Mapping file id8294 NCBI file | EvidenceTAS |
| GeneHBA1 | AuthorityHGNC:4823 | Mapping file id3039 NCBI file | EvidenceTAS |
| GeneHBA2 | AuthorityHGNC:4824 | Mapping file id3040 NCBI file | EvidenceTAS |
| GeneHBB | AuthorityHGNC:4827 | Mapping file id3043 NCBI file | EvidenceTAS |
| GeneHDAC3 | AuthorityHGNC:4854 | Mapping file id8841 NCBI file | EvidenceIEA, TAS |
| GeneHDAC6 | AuthorityHGNC:14064 | Mapping file id10013 NCBI file | EvidenceTAS |
| GeneHDGF | AuthorityHGNC:4856 | Mapping file id3068 NCBI file | EvidenceTAS |
| GeneHELZ2 | AuthorityHGNC:30021 | Mapping file id85441 NCBI file | EvidenceIEA, TAS |
| GeneHERPUD1 | AuthorityHGNC:13744 | Mapping file id9709 NCBI file | EvidenceTAS |
| GeneHIF1A | AuthorityHGNC:4910 | Mapping file id3091 NCBI file | EvidenceTAS |
| GeneHIF1AN | AuthorityHGNC:17113 | Mapping file id55662 NCBI file | EvidenceTAS |
| GeneHIF3A | AuthorityHGNC:15825 | Mapping file id64344 NCBI file | EvidenceTAS |
| GeneHIGD1A | AuthorityHGNC:29527 | Mapping file id25994 NCBI file | EvidenceTAS |
| GeneHIGD1C | AuthorityHGNC:28044 | Mapping file id613227 NCBI file | EvidenceTAS |
| GeneHIKESHI | AuthorityHGNC:26938 | Mapping file id51501 NCBI file | EvidenceTAS |
| GeneHIRA | AuthorityHGNC:4916 | Mapping file id7290 NCBI file | EvidenceTAS |
| GeneHM13 | AuthorityHGNC:16435 | Mapping file id81502 NCBI file | EvidenceTAS |
| GeneHMGA1 | AuthorityHGNC:5010 | Mapping file id3159 NCBI file | EvidenceTAS |
| GeneHMGA2 | AuthorityHGNC:5009 | Mapping file id8091 NCBI file | EvidenceTAS |
| GeneHMOX1 | AuthorityHGNC:5013 | Mapping file id3162 NCBI file | EvidenceIEA, TAS |
| GeneHMOX2 | AuthorityHGNC:5014 | Mapping file id3163 NCBI file | EvidenceTAS |
| GeneHSBP1 | AuthorityHGNC:5203 | Mapping file id3281 NCBI file | EvidenceTAS |
| GeneHSF1 | AuthorityHGNC:5224 | Mapping file id3297 NCBI file | EvidenceTAS |
| GeneHSP90AA1 | AuthorityHGNC:5253 | Mapping file id3320 NCBI file | EvidenceTAS |
| GeneHSP90AB1 | AuthorityHGNC:5258 | Mapping file id3326 NCBI file | EvidenceTAS |
| GeneHSP90B1 | AuthorityHGNC:12028 | Mapping file id7184 NCBI file | EvidenceTAS |
| GeneHSPA12A | AuthorityHGNC:19022 | Mapping file id259217 NCBI file | EvidenceTAS |
| GeneHSPA12B | AuthorityHGNC:16193 | Mapping file id116835 NCBI file | EvidenceTAS |
| GeneHSPA13 | AuthorityHGNC:11375 | Mapping file id6782 NCBI file | EvidenceTAS |
| GeneHSPA14 | AuthorityHGNC:29526 | Mapping file id51182 NCBI file | EvidenceTAS |
| GeneHSPA1A | AuthorityHGNC:5232 | Mapping file id3303 NCBI file | EvidenceTAS |
| GeneHSPA1B | AuthorityHGNC:5233 | Mapping file id3304 NCBI file | EvidenceTAS |
| GeneHSPA1L | AuthorityHGNC:5234 | Mapping file id3305 NCBI file | EvidenceTAS |
| GeneHSPA2 | AuthorityHGNC:5235 | Mapping file id3306 NCBI file | EvidenceTAS |
| GeneHSPA4 | AuthorityHGNC:5237 | Mapping file id3308 NCBI file | EvidenceTAS |
| GeneHSPA4L | AuthorityHGNC:17041 | Mapping file id22824 NCBI file | EvidenceTAS |
| GeneHSPA5 | AuthorityHGNC:5238 | Mapping file id3309 NCBI file | EvidenceIEA, TAS |
| GeneHSPA6 | AuthorityHGNC:5239 | Mapping file id3310 NCBI file | EvidenceTAS |
| GeneHSPA8 | AuthorityHGNC:5241 | Mapping file id3312 NCBI file | EvidenceTAS |
| GeneHSPA9 | AuthorityHGNC:5244 | Mapping file id3313 NCBI file | EvidenceTAS |
| GeneHSPB1 | AuthorityHGNC:5246 | Mapping file idENSG00000106211 Ensembl file | EvidenceTAS |
| GeneHSPB2 | AuthorityHGNC:5247 | Mapping file idENSG00000170276 Ensembl file | EvidenceTAS |
| GeneHSPB8 | AuthorityHGNC:30171 | Mapping file id26353 NCBI file | EvidenceTAS |
| GeneHSPD1 | AuthorityHGNC:5261 | Mapping file id3329 NCBI file | EvidenceTAS |
| GeneHSPE1 | AuthorityHGNC:5269 | Mapping file id3336 NCBI file | EvidenceTAS |
| GeneHSPH1 | AuthorityHGNC:16969 | Mapping file id10808 NCBI file | EvidenceTAS |
| GeneHTRA2 | AuthorityHGNC:14348 | Mapping file id27429 NCBI file | EvidenceTAS |
| GeneHYOU1 | AuthorityHGNC:16931 | Mapping file id10525 NCBI file | EvidenceTAS |
| GeneID1 | AuthorityHGNC:5360 | Mapping file id3397 NCBI file | EvidenceTAS |
| GeneIDH1 | AuthorityHGNC:5382 | Mapping file id3417 NCBI file | EvidenceTAS |
| GeneIFNB1 | AuthorityHGNC:5434 | Mapping file id3456 NCBI file | EvidenceTAS |
| GeneIGFBP1 | AuthorityHGNC:5469 | Mapping file id3484 NCBI file | EvidenceTAS |
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
Children
- Cellular response to chemical stressR-HSA-9711123199 genes
- Cellular response to heat stressR-HSA-3371556101 genes
- Cellular response to hypoxiaR-HSA-123417462 genes
- Cellular response to mitochondrial stressR-HSA-98403739 genes
- Cellular response to starvationR-HSA-9711097157 genes
- Cellular SenescenceR-HSA-2559583200 genes
- Heme signalingR-HSA-970761648 genes
- HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligandR-HSA-337149757 genes
- Mitochondrial unfolded protein response (UPRmt)R-HSA-984125118 genes
- Response of EIF2AK1 (HRI) to heme deficiencyR-HSA-964889515 genes
- Unfolded Protein Response (UPR)R-HSA-38111994 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.