CD4 antigen

mammalian protein found in Mus musculus

Protein protein Q14865413

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CD4 antigen

Summary

CD4 antigen is a protein^[1].

Key Facts

CD4 antigen's instance of is recorded as protein^[2].
CD4 antigen's UniProt protein ID is recorded as P06332^[3].
CD4 antigen's part of is recorded as T-cell surface antigen CD4^[4].
CD4 antigen's part of is recorded as Immunoglobulin-like fold^[5].
CD4 antigen's part of is recorded as Immunoglobulin-like domain superfamily^[6].
CD4 antigen's part of is recorded as membrane protein^[7].
CD4 antigen's part of is recorded as immunoglobulin subtype, protein family^[8].
CD4 antigen's part of is recorded as Immunoglobulin V-set domain, protein family^[9].
CD4 antigen's part of is recorded as T cell CD4 receptor C-terminal region, protein family^[10].
CD4 antigen's part of is recorded as Immunoglobulin C2-set, protein family^[11].
CD4 antigen's part of is recorded as CD4, extracellular domain, protein family^[12].
CD4 antigen's part of is recorded as immunoglobulin-like domain, protein family^[13].
CD4 antigen's part of is recorded as Immunoglobulin domain, protein family^[14].
CD4 antigen's has part is recorded as immunoglobulin subtype^[15].
CD4 antigen's has part is recorded as immunoglobulin domain^[16].
CD4 antigen's has part is recorded as CD4, extracellular^[17].
CD4 antigen's has part is recorded as immunoglobulin V-set domain^[18].
CD4 antigen's has part is recorded as T cell CD4 receptor C-terminal region^[19].
CD4 antigen's has part is recorded as immunoglobulin-like domain^[20].
CD4 antigen's has part is recorded as Immunoglobulin C2-set^[21].
CD4 antigen's RefSeq protein ID is recorded as NP_038516^[22].
CD4 antigen's RefSeq protein ID is recorded as XP_006505524^[23].
CD4 antigen's RefSeq protein ID is recorded as XP_006505525^[24].
CD4 antigen's molecular function is recorded as protein homodimerization activity^[25].
CD4 antigen's molecular function is recorded as coreceptor activity^[26].

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Quick Facts

Instance of protein

Part of T-cell surface antigen CD4, Immunoglobulin-like fold, Immunoglobulin-like domain superfamily, membrane protein, immunoglobulin subtype, protein family, Immunoglobulin V-set domain, protein family, T cell CD4 receptor C-terminal region, protein family, Immunoglobulin C2-set, protein family, CD4, extracellular domain, protein family, immunoglobulin-like domain, protein family, Immunoglobulin domain, protein family

Properties

Biological process positive regulation of calcium-mediated signaling, adaptive immune response, regulation of T cell activation, immune system process, T cell selection, induction by virus of host cell-cell fusion, cytokine production, helper T cell enhancement of adaptive immune response, cell surface receptor signaling pathway, T cell differentiation, cell adhesion, positive regulation of T cell activation, defense response to Gram-negative bacterium, immune response, positive regulation of peptidyl-tyrosine phosphorylation, maintenance of protein location in cell, positive regulation of protein kinase activity, positive regulation of protein phosphorylation, positive regulation of kinase activity, interleukin-15-mediated signaling pathway, positive regulation of I-kappaB kinase/NF-kappaB signaling, positive regulation of MAPK cascade, positive regulation of monocyte differentiation, positive regulation of transcription, DNA-templated, positive regulation of viral entry into host cell, regulation of calcium ion transport, positive regulation of ERK1 and ERK2 cascade, cellular response to granulocyte macrophage colony-stimulating factor stimulus, positive regulation of calcium ion transport into cytosol, positive regulation of T cell proliferation, T cell activation, interleukin-15-mediated signaling pathway, T cell activation, positive regulation of ERK1 and ERK2 cascade, macrophage differentiation, macrophage differentiation

Cell component integral component of membrane, endoplasmic reticulum lumen, endoplasmic reticulum membrane, membrane, plasma membrane, cell surface, membrane raft, external side of plasma membrane, integral component of plasma membrane, external side of plasma membrane, membrane raft

Encoded by Cd4

Found in taxon house mouse

Has part(s) immunoglobulin subtype, immunoglobulin domain, CD4, extracellular, immunoglobulin V-set domain, T cell CD4 receptor C-terminal region, immunoglobulin-like domain, Immunoglobulin C2-set

Imported from wholeness_audit_2026-05-02

Molecular function protein homodimerization activity, coreceptor activity, zinc ion binding, enzyme binding, protein kinase binding, MHC class II protein binding, interleukin-16 binding, interleukin-16 receptor activity, protein binding, identical protein binding, protein tyrosine kinase binding, immunoglobulin binding, MHC class II protein binding, protein tyrosine kinase binding, signaling receptor binding

External References (3)

Ensembl protein id ENSMUSP00000024044

Refseq protein id NP_038516, XP_006505524, XP_006505525

Uniprot protein id P06332

References

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

Direct Wikidata claims

[2] ↑ CD4 antigen — instance of (P31): protein. Q905695. Retrieved 2022-05-25. wikidata.org.
[3] ↑ CD4 antigen — UniProt protein ID (P352): P06332. Q905695. Retrieved 2022-05-25. wikidata.org.
[4] ↑ CD4 antigen — part of (P361): T-cell surface antigen CD4. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[5] ↑ CD4 antigen — part of (P361): Immunoglobulin-like fold. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[6] ↑ CD4 antigen — part of (P361): Immunoglobulin-like domain superfamily. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[7] ↑ CD4 antigen — part of (P361): membrane protein. wikidata.org.
[8] ↑ CD4 antigen — part of (P361): immunoglobulin subtype, protein family. wikidata.org.
[9] ↑ CD4 antigen — part of (P361): Immunoglobulin V-set domain, protein family. wikidata.org.
[10] ↑ CD4 antigen — part of (P361): T cell CD4 receptor C-terminal region, protein family. wikidata.org.
[11] ↑ CD4 antigen — part of (P361): Immunoglobulin C2-set, protein family. wikidata.org.
[12] ↑ CD4 antigen — part of (P361): CD4, extracellular domain, protein family. wikidata.org.
[13] ↑ CD4 antigen — part of (P361): immunoglobulin-like domain, protein family. wikidata.org.
[14] ↑ CD4 antigen — part of (P361): Immunoglobulin domain, protein family. wikidata.org.
[15] ↑ CD4 antigen — has part(s) (P527): immunoglobulin subtype. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[16] ↑ CD4 antigen — has part(s) (P527): immunoglobulin domain. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[17] ↑ CD4 antigen — has part(s) (P527): CD4, extracellular. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[18] ↑ CD4 antigen — has part(s) (P527): immunoglobulin V-set domain. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[19] ↑ CD4 antigen — has part(s) (P527): T cell CD4 receptor C-terminal region. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[20] ↑ CD4 antigen — has part(s) (P527): immunoglobulin-like domain. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[21] ↑ CD4 antigen — has part(s) (P527): Immunoglobulin C2-set. InterPro Release 71.0. ebi.ac.uk. Provenance: wikidata.org.
[22] ↑ CD4 antigen — RefSeq protein ID (P637): NP_038516. Q20641742. Retrieved 2022-03-20. wikidata.org.
[23] ↑ CD4 antigen — RefSeq protein ID (P637): XP_006505524. Q20641742. Retrieved 2022-03-20. wikidata.org.
[24] ↑ CD4 antigen — RefSeq protein ID (P637): XP_006505525. Q20641742. Retrieved 2022-03-20. wikidata.org.
[25] ↑ CD4 antigen — molecular function (P680): protein homodimerization activity. GOA. Retrieved 2019-05-09. ebi.ac.uk. Provenance: wikidata.org.
[26] ↑ CD4 antigen — molecular function (P680): coreceptor activity. GOA. Retrieved 2019-05-09. ebi.ac.uk. Provenance: wikidata.org.

Class ancestry

[1] ↑ CD4 antigen is an instance of protein (Q8054) [P31, primary]. 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). CD4 antigen. Retrieved May 3, 2026, from https://4ort.xyz/entity/cd4-antigen

MLA “CD4 antigen.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/cd4-antigen.

BibTeX

@misc{4ortxyz_cd4-antigen_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{CD4 antigen}}, year = {2026}, url = {https://4ort.xyz/entity/cd4-antigen}, note = {Accessed: 2026-05-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): CD4 antigen — https://4ort.xyz/entity/cd4-antigen (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/cd4-antigen · Last refreshed: May 3, 2026