Abstract
Our understanding of the X-linked lymphoproliferative syndrome (XLP) has advanced significantly in the past two years. The gene that is aberrant in the condition - SH2D1A/SAP, which encodes SAP (signaling lymphocytic activation molecule [SLAM]-associated protein) - was cloned, the crystal structure of its product was solved and insights into the signaling mechanisms of this small SH2-domain-containing protein via the cell surface receptors SLAM and 2B4 have been provided. SAP mutation, and not Epstein-Barr virus infection per se, may be critical for XLP.
MeSH terms
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Antigens, CD
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Carrier Proteins / genetics*
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Carrier Proteins / immunology*
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Cloning, Molecular
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Gene Deletion*
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Glycoproteins / immunology
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Herpesvirus 4, Human / immunology*
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Humans
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Immunoglobulins / immunology
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Intracellular Signaling Peptides and Proteins*
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Lymphoproliferative Disorders / genetics*
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Lymphoproliferative Disorders / immunology*
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Lymphoproliferative Disorders / virology
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Receptors, Antigen, T-Cell / immunology
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Receptors, Cell Surface
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Signaling Lymphocytic Activation Molecule Associated Protein
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Signaling Lymphocytic Activation Molecule Family Member 1
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T-Lymphocytes / immunology*
Substances
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Antigens, CD
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Carrier Proteins
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Glycoproteins
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Immunoglobulins
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Intracellular Signaling Peptides and Proteins
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Receptors, Antigen, T-Cell
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Receptors, Cell Surface
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SH2D1A protein, human
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Signaling Lymphocytic Activation Molecule Associated Protein
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Signaling Lymphocytic Activation Molecule Family Member 1