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CD25 deficiency or interleukin 2 receptor alpha deficiency is an immunodeficiency disorder associated with mutations in the interleukin 2 receptor alpha (CD25) (IL2RA) gene. The mutations cause expression of a defective α chain or complete absence thereof, an essential part of high-affinity interleukin-2 (IL-2) receptors.
The interleukin-2 receptor alpha chain (also called Tac antigen, P55, and mainly CD25) is a protein involved in the assembly of the high-affinity interleukin-2 receptor, consisting of alpha (IL2RA), beta and the common gamma chain ().
IL-2 binds to the IL-2 receptor, which has three forms, generated by different combinations of three different proteins, often referred to as "chains": α (alpha) (also called IL-2Rα, CD25, or Tac antigen), β (beta) (also called IL-2Rβ, or CD122), and γ (gamma) (also called IL-2Rγ, γ c, common gamma chain, or CD132); these subunits are also parts of receptors for other cytokines.
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All T cells derive from progenitor cells in the bone marrow, which become committed to their lineage in the thymus.All T cells begin as CD4-CD8-TCR- cells at the DN (double-negative) stage, where an individual cell will rearrange its T cell receptor genes to form a unique, functional molecule, which they, in turn, test against cells in the thymic cortex for a minimal level of interaction with ...
16185 Ensembl ENSG00000100385 ENSMUSG00000068227 UniProt P14784 P16297 RefSeq (mRNA) NM_000878 NM_001346222 NM_001346223 NM_008368 RefSeq (protein) NP_000869 NP_001333151 NP_001333152 NP_032394 Location (UCSC) Chr 22: 37.13 – 37.18 Mb Chr 15: 78.36 – 78.38 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Interleukin-2 receptor subunit beta is a protein that in humans is encoded by ...
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Various images are used traditionally to symbolize death; these rank from blunt depictions of cadavers and their parts to more allusive suggestions that time is fleeting and all men are mortals. The human skull is an obvious and frequent symbol of death, found in many cultures and religious traditions. [1]