AAB64205.1
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
79,937 Da
NCBI Official Full Name
Bruton's tyrosine kinase
NCBI Official Synonym Full Names
Bruton agammaglobulinemia tyrosine kinase
NCBI Official Synonym Symbols
AT; ATK; BPK; XLA; IMD1; AGMX1; PSCTK1 [Similar Products]
NCBI Protein Information
tyrosine-protein kinase BTK; B-cell progenitor kinase; agammaglobulinaemia tyrosine kinase; truncated Bruton agammaglobulinemia tyrosine kinase; tyrosine-protein kinase BTK isoform (lacking exon 14); dominant-negative kinase-deficient Brutons tyrosine kinase
UniProt Protein Name
Tyrosine-protein kinase BTK
UniProt Synonym Protein Names
Agammaglobulinemia tyrosine kinase; ATK; B-cell progenitor kinase; BPK; Bruton tyrosine kinase
UniProt Synonym Gene Names
UniProt Entry Name
BTK_HUMAN
NCBI Summary for Btk
The protein encoded by this gene plays a crucial role in B-cell development. Mutations in this gene cause X-linked agammaglobulinemia type 1, which is an immunodeficiency characterized by the failure to produce mature B lymphocytes, and associated with a failure of Ig heavy chain rearrangement. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2013]
UniProt Comments for Btk
Btk: a tyrosine kinase of the Tec family. Plays a crucial role in B-cell ontogeny. Defects cause X-linked agammaglobulinemia, an immunodeficiency characterized by failure to produce mature B lymphocyte cells and associated with a failure of Ig heavy chain rearrangement. Truncated splice forms found in childhood leukemias may underlie radiation resistance of tumors through inhibition of apoptosis.
Protein type: Protein kinase, tyrosine (non-receptor); Kinase, protein; EC 2.7.10.2; Protein kinase, TK; TK group; Tec family
Chromosomal Location of Human Ortholog: Xq21.33-q22
Cellular Component: extrinsic to internal side of plasma membrane; mast cell granule; intracellular membrane-bound organelle; perinuclear region of cytoplasm; cytoplasm; plasma membrane; cytoplasmic vesicle; nucleus; cytosol; lipid raft
Molecular Function: identical protein binding; protein binding; phosphatidylinositol-3,4,5-triphosphate binding; protein-tyrosine kinase activity; metal ion binding; non-membrane spanning protein tyrosine kinase activity; ATP binding; receptor binding
Biological Process: I-kappaB kinase/NF-kappaB cascade; adaptive immune response; B cell activation; transcription, DNA-dependent; cell maturation; calcium-mediated signaling; T cell receptor signaling pathway; protein amino acid phosphorylation; activation of NF-kappaB transcription factor; toll-like receptor 2 signaling pathway; regulation of cell proliferation; regulation of B cell cytokine production; regulation of B cell apoptosis; MyD88-dependent toll-like receptor signaling pathway; B cell receptor signaling pathway; histamine secretion by mast cell; toll-like receptor signaling pathway; positive regulation of B cell differentiation; innate immune response; mesoderm development; cell differentiation; toll-like receptor 4 signaling pathway; transmembrane receptor protein tyrosine kinase signaling pathway
Disease: Isolated Growth Hormone Deficiency, Type Iii; Agammaglobulinemia, X-linked
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