complement C3d receptor 2

mammalian protein found in Homo sapiens
Protein protein Q4393893
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complement C3d receptor 2

Summary

complement C3d receptor 2 is a protein[1]. It draws 22 Wikipedia views per month (protein category, ranking #140 of 987).[2]

Key Facts

  • complement C3d receptor 2's instance of is recorded as protein[3].
  • complement C3d receptor 2's UniProt protein ID is recorded as P20023[4].
  • complement C3d receptor 2's part of is recorded as Sushi/SCR/CCP superfamily[5].
  • complement C3d receptor 2's part of is recorded as Sushi/SCR/CCP domain, protein family[6].
  • complement C3d receptor 2's MeSH descriptor ID is recorded as D017464[7].
  • complement C3d receptor 2's has part is recorded as sushi/SCR/CCP domain[8].
  • complement C3d receptor 2's RefSeq protein ID is recorded as NP_001006659[9].
  • complement C3d receptor 2's RefSeq protein ID is recorded as NP_001868[10].
  • complement C3d receptor 2's RefSeq protein ID is recorded as XP_011507508[11].
  • complement C3d receptor 2's PDB structure ID is recorded as 1GHQ[12].
  • complement C3d receptor 2's PDB structure ID is recorded as 1LY2[13].
  • complement C3d receptor 2's PDB structure ID is recorded as 1W2R[14].
  • complement C3d receptor 2's PDB structure ID is recorded as 1W2S[15].
  • complement C3d receptor 2's PDB structure ID is recorded as 2GSX[16].
  • complement C3d receptor 2's PDB structure ID is recorded as 3OED[17].
  • complement C3d receptor 2's Freebase ID is recorded as /m/0fjg66[18].
  • complement C3d receptor 2's MeSH tree code is recorded as D12.776.543.750.705.833.610[19].
  • complement C3d receptor 2's MeSH tree code is recorded as D12.776.543.750.830.250[20].
  • complement C3d receptor 2's molecular function is recorded as DNA binding[21].
  • complement C3d receptor 2's molecular function is recorded as protein homodimerization activity[22].
  • complement C3d receptor 2's molecular function is recorded as virus receptor activity[23].
  • complement C3d receptor 2's molecular function is recorded as complement binding[24].
  • complement C3d receptor 2's molecular function is recorded as transmembrane signaling receptor activity[25].
  • complement C3d receptor 2's molecular function is recorded as complement receptor activity[26].
  • complement C3d receptor 2's molecular function is recorded as protein binding[27].

Why It Matters

complement C3d receptor 2 draws 22 Wikipedia views per month (protein category, ranking #140 of 987).[2] It has Wikipedia articles in 7 language editions, a strong signal of global cultural recognition.[28] It is known by 11 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] . Q905695. Retrieved . wikidata.org.
  3. [5] . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
  7. [9] . Q20641742. Retrieved . wikidata.org.
  8. [10] . Q20641742. Retrieved . wikidata.org.
  9. [11] . Q20641742. Retrieved . wikidata.org.
  10. [12] . Q905695. Retrieved . wikidata.org.
  11. [13] . Q905695. Retrieved . wikidata.org.
  12. [14] . Q905695. Retrieved . wikidata.org.
  13. [15] . Q905695. Retrieved . wikidata.org.
  14. [16] . Q905695. Retrieved . wikidata.org.
  15. [17] . Q905695. Retrieved . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . Human complement receptor 2 (CR2/CD21) as a receptor for DNA: Implications for its roles in the immune response and the pathogenesis of systemic lupus erythematosus (SLE). Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  20. [22] . Cr2, a Candidate Gene in the Murine Sle1c Lupus Susceptibility Locus, Encodes a Dysfunctional Protein. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  21. [23] . GOA. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  22. [24] . Structure-guided identification of C3d residues essential for its binding to complement receptor 2 (CD21). Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  23. [25] . Molecular cloning of the cDNA encoding the Epstein-Barr virus/C3d receptor (complement receptor type 2) of human B lymphocytes. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  24. [26] . Genomic organization and polymorphisms of the human C3d/Epstein-Barr virus receptor. Retrieved . ebi.ac.uk. Provenance: wikidata.org.
  25. [27] . Binding sites of the Epstein-Barr virus and C3d receptor (CR2, CD21) for its three intracellular ligands, the p53 anti-oncoprotein, the p68 calcium binding protein and the nuclear p120 ribonucleoprotein. 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). complement C3d receptor 2. Retrieved May 3, 2026, from https://4ort.xyz/entity/complement-c3d-receptor-2
MLA “complement C3d receptor 2.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/complement-c3d-receptor-2.
BibTeX @misc{4ortxyz_complement-c3d-receptor-2_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{complement C3d receptor 2}}, year = {2026}, url = {https://4ort.xyz/entity/complement-c3d-receptor-2}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): complement C3d receptor 2 — https://4ort.xyz/entity/complement-c3d-receptor-2 (retrieved 2026-05-03)

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