phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta
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The PIK3CD gene provides instructions for making the p110 delta (p110δ) protein, which is one piece (subunit) of an enzyme called phosphatidylinositol 3-kinase (PI3K). The version of PI3K that contains the p110δ subunit, called PI3K delta, is found in white blood cells, including immune system cells (lymphocytes) called B cells and T cells. These cells recognise and attack foreign invaders, such as viruses and bacteria, to prevent infection.
Normal function
The PIK3CD gene provides instructions for making the p110 delta (p110δ) protein, which is one piece (subunit) of an enzyme called phosphatidylinositol 3-kinase (PI3K). The version of PI3K that contains the p110δ subunit, called PI3K delta, is found in white blood cells, including immune system cells (lymphocytes) called B cells and T cells. These cells recognise and attack foreign invaders, such as viruses and bacteria, to prevent infection.
PI3K delta functions as a kinase, which means that it adds a cluster of oxygen and phosphorus atoms (a phosphate group) to other proteins through a process called phosphorylation. PI3K delta phosphorylates certain signaling molecules, which triggers a series of additional reactions that transmit chemical signals within cells. In lymphocytes, PI3K delta signaling is important for many cell activities, including cell growth and division (proliferation) and maturation (differentiation). PI3K delta helps direct B cells and T cells to differentiate into different types, each of which has a distinct function in the immune system.
Conditions referring to this gene or chromosome
Altri nomi
p110D
P110DELTA
phosphatidylinositol-4,5-bisphosphate 3-kinase 110 kDa catalytic subunit delta
phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit delta
phosphoinositide-3-kinase C
PI3-kinase p110 subunit delta
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Ulteriori letture e riferimenti
- phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta; MedlinePlus, National Library of Medicine.
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- Crank MC, Grossman JK, Moir S, Pittaluga S, Buckner CM, Kardava L, Agharahimi A, Meuwissen H, Stoddard J, Niemela J, Kuehn H, Rosenzweig SD. Mutations in PIK3CD can cause hyper IgM syndrome (HIGM) associated with increased cancer susceptibility. J Clin Immunol. 2014 Apr;34(3):272-6. doi: 10.1007/s10875-014-0012-9. Epub 2014 Mar 8.
- Jou ST, Chien YH, Yang YH, Wang TC, Shyur SD, Chou CC, Chang ML, Lin DT, Lin KH, Chiang BL. Identification of variations in the human phosphoinositide 3-kinase p110delta gene in children with primary B-cell immunodeficiency of unknown aetiology. Int J Immunogenet. 2006 Oct;33(5):361-9. doi: 10.1111/j.1744-313X.2006.00627.x.
- Kracker S, Curtis J, Ibrahim MA, Sediva A, Salisbury J, Campr V, Debre M, Edgar JD, Imai K, Picard C, Casanova JL, Fischer A, Nejentsev S, Durandy A. Occurrence of B-cell lymphomas in patients with activated phosphoinositide 3-kinase delta syndrome. J Allergy Clin Immunol. 2014 Jul;134(1):233-6. doi: 10.1016/j.jaci.2014.02.020. Epub 2014 Apr 1. No abstract available.
- Lucas CL, Kuehn HS, Zhao F, Niemela JE, Deenick EK, Palendira U, Avery DT, Moens L, Cannons JL, Biancalana M, Stoddard J, Ouyang W, Frucht DM, Rao VK, Atkinson TP, Agharahimi A, Hussey AA, Folio LR, Olivier KN, Fleisher TA, Pittaluga S, Holland SM, Cohen JI, Oliveira JB, Tangye SG, Schwartzberg PL, Lenardo MJ, Uzel G. Dominant-activating germline mutations in the gene encoding the PI(3)K catalytic subunit p110delta result in T cell senescence and human immunodeficiency. Nat Immunol. 2014 Jan;15(1):88-97. doi: 10.1038/ni.2771. Epub 2013 Oct 28.
- Okkenhaug K. Signaling by the phosphoinositide 3-kinase family in immune cells. Annu Rev Immunol. 2013;31:675-704. doi: 10.1146/annurev-immunol-032712-095946. Epub 2013 Jan 16.
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