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Pathway Mouse Mus musculus

Read this first

Every mouse pathway in Reactome is electronically inferred from the curated human one; Reactome's own sentence about that stands beside the record below.

Amine ligand-binding receptors

R-MMU-375280 in Reactome release 97: under Class A/1 (Rhodopsin-like receptors), with 43 genes placed in it by the mapping files and 5 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-HSA-375280 (human), R-RNO-375280 (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.

Every mouse pathway in Reactome is inferred from the curated human one: We use the set of manually curated human reactions to electronically infer reactions in fourteen evolutionarily divergent eukaryotic species for which high-quality whole-genome sequence data are available, and hence a comprehensive and high-quality set of protein predictions exists. [R11] Reactome's own sentence about what that produces is printed beside the record: The electronically inferred reactions presented in Reactome are thus not data, but hypotheses useful to direct the design of confirmatory experiments. [R11]

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. [R11] Reactome, reactome.org. Computationally inferred events. https://reactome.org/documentation/inferred-events, read 2026-09-09.
  5. [R12] Reactome, reactome.org. Citing us. https://reactome.org/cite, read 2026-09-09.
  6. [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 mouse pathway

The mapping files place 43 genes in this mouse pathway; showing 1 to 43, in pages of 100, sorted by symbol for reading. The order carries no ranking.

Genes Reactome places in this mouse pathway, page 1 of 1
GeneAdra1aAuthority11549Mapping file id11549 NCBI fileEvidenceIEA
GeneAdra1bAuthority11548Mapping file idENSMUSG00000050541 Ensembl fileEvidenceIEA
GeneAdra1dAuthority11550Mapping file idENSMUSG00000027335 Ensembl fileEvidenceIEA
GeneAdra2aAuthority11551Mapping file id11551 NCBI fileEvidenceIEA
GeneAdra2bAuthority11552Mapping file id11552 NCBI fileEvidenceIEA
GeneAdra2cAuthority11553Mapping file id11553 NCBI fileEvidenceIEA
GeneAdrb1Authority11554Mapping file id11554 NCBI fileEvidenceIEA
GeneAdrb2Authority11555Mapping file id11555 NCBI fileEvidenceIEA
GeneAdrb3Authority11556Mapping file id11556 NCBI fileEvidenceIEA
GeneChrm1Authority12669Mapping file id12669 NCBI fileEvidenceIEA
GeneChrm2Authority243764Mapping file id243764 NCBI fileEvidenceIEA
GeneChrm3Authority12671Mapping file id12671 NCBI fileEvidenceIEA
GeneChrm4Authority12672Mapping file id12672 NCBI fileEvidenceIEA
GeneChrm5Authority213788Mapping file id213788 NCBI fileEvidenceIEA
GeneDrd1Authority13488Mapping file id13488 NCBI fileEvidenceIEA
GeneDrd2Authority13489Mapping file id13489 NCBI fileEvidenceIEA
GeneDrd3Authority13490Mapping file id13490 NCBI fileEvidenceIEA
GeneDrd4Authority13491Mapping file id13491 NCBI fileEvidenceIEA
GeneDrd5Authority13492Mapping file id13492 NCBI fileEvidenceIEA
GeneGpr143Authority18241Mapping file id18241 NCBI fileEvidenceIEA
GeneHrh1Authority15465Mapping file id15465 NCBI fileEvidenceIEA
GeneHrh2Authority15466Mapping file id15466 NCBI fileEvidenceIEA
GeneHrh3Authority99296Mapping file id99296 NCBI fileEvidenceIEA
GeneHrh4Authority225192Mapping file id225192 NCBI fileEvidenceIEA
GeneHtr1aAuthority15550Mapping file id15550 NCBI fileEvidenceIEA
GeneHtr1bAuthority15551Mapping file id15551 NCBI fileEvidenceIEA
GeneHtr1dAuthority15552Mapping file id15552 NCBI fileEvidenceIEA
GeneHtr1fAuthority15557Mapping file id15557 NCBI fileEvidenceIEA
GeneHtr2aAuthority15558Mapping file id15558 NCBI fileEvidenceIEA
GeneHtr2bAuthority15559Mapping file id15559 NCBI fileEvidenceIEA
GeneHtr2cAuthority15560Mapping file id15560 NCBI fileEvidenceIEA
GeneHtr4Authority15562Mapping file id15562 NCBI fileEvidenceIEA
GeneHtr5aAuthority15563Mapping file id15563 NCBI fileEvidenceIEA
GeneHtr6Authority15565Mapping file id15565 NCBI fileEvidenceIEA
GeneHtr7Authority15566Mapping file id15566 NCBI fileEvidenceIEA
GeneTaar1Authority111174Mapping file id111174 NCBI fileEvidenceIEA
GeneTaar2Authority209512Mapping file id209512 NCBI fileEvidenceIEA
GeneTaar3Authority493809Mapping file id493809 NCBI fileEvidenceIEA
GeneTaar5Authority215854Mapping file id215854 NCBI fileEvidenceIEA
GeneTaar6Authority215855Mapping file id215855 NCBI fileEvidenceIEA
GeneTaar8bAuthority382348Mapping file id382348 NCBI fileEvidenceIEA
GeneTaar8cAuthority494546Mapping file id494546 NCBI fileEvidenceIEA
GeneTaar9Authority503558Mapping file id503558 NCBI fileEvidenceIEA

Evidence codes on this page: IEA, 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: the two files disagree on none of the 87,729 mouse pairs both place.

  • Reactome mapping files, the mouse 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 mouse 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.