cytochrome P450 family 3 subfamily A member 4

mammalian protein found in Homo sapiens
Protein protein Q424440
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cytochrome P450 family 3 subfamily A member 4

Summary

cytochrome P450 family 3 subfamily A member 4 is a protein[1]. It ranks in the top 0.71% of protein entities by monthly Wikipedia readership (1,575 views/month, #7 of 987).[2]

Key Facts

  • cytochrome P450 family 3 subfamily A member 4's instance of is recorded as protein[3].
  • cytochrome P450 family 3 subfamily A member 4's physically interacts with is recorded as nefazodone[4].
  • cytochrome P450 family 3 subfamily A member 4's physically interacts with is recorded as ritonavir[5].
  • cytochrome P450 family 3 subfamily A member 4's physically interacts with is recorded as verapamil[6].
  • cytochrome P450 family 3 subfamily A member 4 is part of cytochrome P450 superfamily[7].
  • cytochrome P450 family 3 subfamily A member 4 is part of cytochrome P450, E-class, CYP3A[8].
  • cytochrome P450 family 3 subfamily A member 4 is part of cytochrome P450, conserved site, protein family[9].
  • cytochrome P450 family 3 subfamily A member 4 comprises cytochrome P450, conserved site[10].
  • cytochrome P450 family 3 subfamily A member 4's EC enzyme number is recorded as 1.14.13.32[11].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as metal ion binding[12].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as heme binding[13].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as caffeine oxidase activity[14].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as testosterone 6-beta-hydroxylase activity[15].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen[16].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as steroid binding[17].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as vitamin D3 25-hydroxylase activity[18].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as steroid hydroxylase activity[19].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as vitamin D 24-hydroxylase activity[20].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as oxygen binding[21].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as enzyme binding[22].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as iron ion binding[23].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen[24].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as monooxygenase activity[25].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as oxidoreductase activity[26].
  • cytochrome P450 family 3 subfamily A member 4's molecular function is recorded as estrogen 16-alpha-hydroxylase activity[27].

Why It Matters

cytochrome P450 family 3 subfamily A member 4 ranks in the top 0.71% of protein entities by monthly Wikipedia readership (1,575 views/month, #7 of 987).[2] It has Wikipedia articles in 18 language editions, a strong signal of global cultural recognition.[28] It is known by 31 alternative names across languages and contexts.[29]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . Q905695. Retrieved . wikidata.org.
  2. [4] . IUPHAR/BPS Guide to PHARMACOLOGY. Retrieved . wikidata.org.
  3. [5] . IUPHAR/BPS Guide to PHARMACOLOGY. Retrieved . wikidata.org.
  4. [6] . IUPHAR/BPS Guide to PHARMACOLOGY. Retrieved . wikidata.org.
  5. [7] . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  6. [8] . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  9. [11] . Swiss-Prot. Retrieved . uniprot.org. Provenance: wikidata.org.
  10. [12] . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  11. [13] . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  12. [14] . The relative contribution of human cytochrome P450 isoforms to the four caffeine oxidation pathways: an in vitro comparative study with cDNA-expressed P450s including CYP2C isoforms. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  13. [15] . Human liver microsomal steroid metabolism: identification of the major microsomal steroid hormone 6 beta-hydroxylase cytochrome P-450 enzyme. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  14. [16] . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  15. [17] . Crystal structures of human cytochrome P450 3A4 bound to metyrapone and progesterone. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  16. [18] . CYP3A4 is a vitamin D-24- and 25-hydroxylase: analysis of structure function by site-directed mutagenesis. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  17. [19] . Identification of the human cytochrome P450 enzymes involved in the in vitro biotransformation of lynestrenol and norethindrone. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  18. [20] . CYP3A4 is a vitamin D-24- and 25-hydroxylase: analysis of structure function by site-directed mutagenesis. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  19. [21] . Complete cDNA sequence of a cytochrome P-450 inducible by glucocorticoids in human liver. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  20. [22] . Interactions of mammalian cytochrome P450, NADPH-cytochrome P450 reductase, and cytochrome b(5) enzymes. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  21. [23] . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  22. [24] . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  23. [25] . Evidence for cytochrome P-450NF, the nifedipine oxidase, being the principal enzyme involved in the bioactivation of aflatoxins in human liver. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  24. [26] . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  25. [27] . Human cytochrome P450 3A7 has a distinct high catalytic activity for the 16alpha-hydroxylation of estrone but not 17beta-estradiol. Retrieved . ebi.ac.uk. Provenance: wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). cytochrome P450 family 3 subfamily A member 4. Retrieved May 3, 2026, from https://4ort.xyz/entity/cytochrome-p450-family-3-subfamily-a-member-4
MLA “cytochrome P450 family 3 subfamily A member 4.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/cytochrome-p450-family-3-subfamily-a-member-4.
BibTeX @misc{4ortxyz_cytochrome-p450-family-3-subfamily-a-member-4_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{cytochrome P450 family 3 subfamily A member 4}}, year = {2026}, url = {https://4ort.xyz/entity/cytochrome-p450-family-3-subfamily-a-member-4}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): cytochrome P450 family 3 subfamily A member 4 — https://4ort.xyz/entity/cytochrome-p450-family-3-subfamily-a-member-4 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/cytochrome-p450-family-3-subfamily-a-member-4 · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 19d ago · Boghog · 2026-07-23 view diff on Wikidata ↗
    Instance of
    Part of
    Encoded by CYP3A4
    Biological process xenobiotic metabolic process, heterocycle metabolic process, oxidative demethylation +10
    + 10 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P591]]: 1.14.14.1, [[:toollabs:quickstatements/#/batch/261446|batch #261446]]"
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