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keratin 4

mammalian protein found in Homo sapiens
Protein protein Q21113486
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keratin 4

Summary

keratin 4 is a protein[1].

Key Facts

  • keratin 4's instance of is recorded as protein[2].
  • keratin 4's UniProt protein ID is recorded as P19013[3].
  • keratin 4's part of is recorded as Keratin, type II[4].
  • keratin 4's part of is recorded as Intermediate filament, rod domain, protein family[5].
  • keratin 4's part of is recorded as Keratin type II head, protein family[6].
  • keratin 4's part of is recorded as Intermediate filament protein, conserved site, protein family[7].
  • keratin 4's MeSH descriptor ID is recorded as D053527[8].
  • keratin 4's has part is recorded as Intermediate filament protein, conserved site[9].
  • keratin 4's has part is recorded as Keratin type II head[10].
  • keratin 4's has part is recorded as Intermediate filament, rod domain[11].
  • keratin 4's RefSeq protein ID is recorded as NP_002263[12].
  • keratin 4's MeSH tree code is recorded as D05.750.078.593.450.600.400[13].
  • keratin 4's MeSH tree code is recorded as D12.776.220.475.450.600.400[14].
  • keratin 4's MeSH tree code is recorded as D12.776.860.607.650.400[15].
  • keratin 4's molecular function is recorded as protein binding[16].
  • keratin 4's molecular function is recorded as structural molecule activity[17].
  • keratin 4's cell component is recorded as cell surface[18].
  • keratin 4's cell component is recorded as intermediate filament cytoskeleton[19].
  • keratin 4's cell component is recorded as keratin filament[20].
  • keratin 4's cell component is recorded as intermediate filament[21].
  • keratin 4's cell component is recorded as nucleus[22].
  • keratin 4's cell component is recorded as cytosol[23].
  • keratin 4's cell component is recorded as nucleus[24].
  • keratin 4's cell component is recorded as intermediate filament[25].
  • keratin 4's cell component is recorded as keratin filament[26].

References

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

Direct Wikidata claims

  1. [2] ↑ . Q905695. Retrieved . wikidata.org.
  2. [3] ↑ . Q905695. Retrieved . wikidata.org.
  3. [4] ↑ . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  9. [10] ↑ . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  10. [11] ↑ . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  11. [12] ↑ . Q20641742. Retrieved . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . The surface protein Srr-1 of Streptococcus agalactiae binds human keratin 4 and promotes adherence to epithelial HEp-2 cells. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  16. [17] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  17. [18] ↑ . The surface protein Srr-1 of Streptococcus agalactiae binds human keratin 4 and promotes adherence to epithelial HEp-2 cells. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  18. [19] ↑ . Down‐regulation of keratin 4 and keratin 13 expression in oral squamous cell carcinoma and epithelial dysplasia: a clue for histopathogenesis. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  19. [20] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  20. [21] ↑ . Molecular characterization and expression of the stratification-related cytokeratins 4 and 15. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  21. [22] ↑ . Proteomic characterization of the human sperm nucleus. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  22. [23] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  23. [24] ↑ . Proteomic characterization of the human sperm nucleus. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  24. [25] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  25. [26] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

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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). keratin 4. Retrieved May 3, 2026, from https://4ort.xyz/entity/keratin-4-q21113486
MLA “keratin 4.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/keratin-4-q21113486.
BibTeX @misc{4ortxyz_keratin-4-q21113486_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{keratin 4}}, year = {2026}, url = {https://4ort.xyz/entity/keratin-4-q21113486}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): keratin 4 — https://4ort.xyz/entity/keratin-4-q21113486 (retrieved 2026-05-03)

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