Pathway candidateNCBI-verifiedprotein-coding

NCOA1

nuclear receptor coactivator 1

NCBI Gene: 8648 Ensembl GeneCards UniProt: Q15788

Pathway candidate — not linked to PFS or PSSD by any record here

NCOA1 is in the library because it belongs to the nuclear receptors family. No study, report or commentary in the corpus names it, so a variant in NCOA1 is not, by itself, evidence of anything related to post-drug syndromes.

Gene summary

A protein-coding gene on chromosome 2 (steroid and nuclear hormone receptors). The protein encoded by this gene acts as a transcriptional coactivator for steroid and nuclear hormone receptors. It is a member of the p160/steroid receptor coactivator (SRC) family and like other family members has histone acetyltransferase activity and contains a nuclear localization signal, as well as bHLH and PAS domains.

Source: NCBI Gene, accessed 2026-10-07.

Protein reference (UniProt)

Protein: Nuclear receptor coactivator 1
Function: Nuclear receptor coactivator that directly binds nuclear receptors and stimulates the transcriptional activities in a hormone-dependent fashion. Involved in the coactivation of different nuclear receptors, such as for steroids (PGR, GR and ER), retinoids (RXRs), thyroid hormone (TRs) and prostanoids (PPARs). Also involved in coactivation mediated by STAT3, STAT5A, STAT5B and STAT6 transcription factors. Displays histone acetyltransferase activity toward H3 and H4; the relevance of such activity remains however unclear. Plays a central role in creating multisubunit coactivator complexes that act via remodeling of chromatin, and possibly acts by participating in both chromatin remodeling and recruitment of general transcription factors. Required with NCOA2 to control energy balance between white and brown adipose tissues. Required for mediating steroid hormone response. Isoform 2 has a higher thyroid hormone-dependent transactivation activity than isoform 1 and isoform 3.
Subcellular location: Nucleus.
Tissue specificity: Widely expressed.

Source: UniProtKB/Swiss-Prot Q15788, release 2026_03, licensed CC BY 4.0. This is the protein’s normal biology, not evidence about post-drug syndromes; associated conditions are inherited disorders of the gene, not PFS, PSSD or PRSD.

Why its pathway is in the library

Nuclear receptors transduce steroid signals into lasting gene-expression programs; persistent receptor-level remodeling (or silencing) is a leading hypothesis for symptoms that outlast drug exposure.

Written for the whole nuclear receptors family, not for NCOA1 specifically.

Mentioned in 0 corpus records

No corpus record names NCOA1 directly yet. It is in the library because it sits in a pathway the corpus tracks (Nuclear receptors).

Also in steroid and nuclear hormone receptors

All 41 genes

Browse by family on the gene families page.

Gene summary

Source: NCBI Gene, accessed 2026-10-07.

Protein reference (UniProt)

Protein: Nuclear receptor coactivator 1
Function: Nuclear receptor coactivator that directly binds nuclear receptors and stimulates the transcriptional activities in a hormone-dependent fashion. Involved in the coactivation of different nuclear receptors, such as for steroids (PGR, GR and ER), retinoids (RXRs), thyroid hormone (TRs) and prostanoids (PPARs). Also involved in coactivation mediated by STAT3, STAT5A, STAT5B and STAT6 transcription factors. Displays histone acetyltransferase activity toward H3 and H4; the relevance of such activity remains however unclear. Plays a central role in creating multisubunit coactivator complexes that act via remodeling of chromatin, and possibly acts by participating in both chromatin remodeling and recruitment of general transcription factors. Required with NCOA2 to control energy balance between white and brown adipose tissues. Required for mediating steroid hormone response. Isoform 2 has a higher thyroid hormone-dependent transactivation activity than isoform 1 and isoform 3.
Subcellular location: Nucleus.
Tissue specificity: Widely expressed.