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Cystatin S

mammalian protein found in Homo sapiens
Protein protein Q21171714
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Cystatin S

Summary

Cystatin S is a protein[1].

Key Facts

  • Cystatin S's instance of is recorded as protein[2].
  • Cystatin S's subclass of is recorded as protein[3].
  • Cystatin S's UniProt protein ID is recorded as P01036[4].
  • Cystatin S's part of is recorded as Cystatin[5].
  • Cystatin S's part of is recorded as cystatins[6].
  • Cystatin S's part of is recorded as Proteinase inhibitor I25, cystatin, conserved site, protein family[7].
  • Cystatin S's has part is recorded as Cystatin domain[8].
  • Cystatin S's has part is recorded as Proteinase inhibitor I25, cystatin, conserved site[9].
  • Cystatin S's RefSeq protein ID is recorded as NP_001890[10].
  • Cystatin S's molecular function is recorded as peptidase inhibitor activity[11].
  • Cystatin S's molecular function is recorded as cysteine-type endopeptidase inhibitor activity[12].
  • Cystatin S's molecular function is recorded as protease binding[13].
  • Cystatin S's cell component is recorded as extracellular region[14].
  • Cystatin S's cell component is recorded as extracellular exosome[15].
  • Cystatin S's cell component is recorded as extracellular space[16].
  • Cystatin S's cell component is recorded as extracellular space[17].
  • Cystatin S's cell component is recorded as extracellular exosome[18].
  • Cystatin S's biological process is recorded as negative regulation of proteolysis[19].
  • Cystatin S's biological process is recorded as retina homeostasis[20].
  • Cystatin S's biological process is recorded as negative regulation of peptidase activity[21].
  • Cystatin S's biological process is recorded as detection of chemical stimulus involved in sensory perception of bitter taste[22].
  • Cystatin S's biological process is recorded as negative regulation of cysteine-type endopeptidase activity[23].
  • Cystatin S's biological process is recorded as retina homeostasis[24].
  • Cystatin S's biological process is recorded as negative regulation of endopeptidase activity[25].
  • Cystatin S's encoded by is recorded as CST4[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] ↑ . Q905695. Retrieved . wikidata.org.
  4. [5] ↑ . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  8. [9] ↑ . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  9. [10] ↑ . Q20641742. Retrieved . wikidata.org.
  10. [11] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  11. [12] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  12. [13] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  13. [14] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  14. [15] ↑ . Proteomic analysis of podocyte exosome-enriched fraction from normal human urine. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  15. [16] ↑ . Comparison of tear protein levels in breast cancer patients and healthy controls using a de novo proteomic approach. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  16. [17] ↑ . Isolation of six cysteine proteinase inhibitors from human urine. Their physicochemical and enzyme kinetic properties and concentrations in biological fluids. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  17. [18] ↑ . Proteomic analysis of human parotid gland exosomes by multidimensional protein identification technology (MudPIT). Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  18. [19] ↑ . Isolation of six cysteine proteinase inhibitors from human urine. Their physicochemical and enzyme kinetic properties and concentrations in biological fluids. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  19. [20] ↑ . Shotgun proteomics reveals specific modulated protein patterns in tears of patients with primary open angle glaucoma naïve to therapy. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  20. [21] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  21. [22] ↑ . Salivary protein profiles are linked to bitter taste acceptance in infants. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  22. [23] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  23. [24] ↑ . Shotgun proteomics reveals specific modulated protein patterns in tears of patients with primary open angle glaucoma naïve to therapy. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  24. [25] ↑ . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  25. [26] ↑ . Q905695. Retrieved . 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). Cystatin S. Retrieved May 3, 2026, from https://4ort.xyz/entity/cystatin-s
MLA “Cystatin S.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/cystatin-s.
BibTeX @misc{4ortxyz_cystatin-s_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Cystatin S}}, year = {2026}, url = {https://4ort.xyz/entity/cystatin-s}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Cystatin S — https://4ort.xyz/entity/cystatin-s (retrieved 2026-05-03)

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