Disease:Defects in CD19 are a cause of hypogammaglobulinemia [MIM:107265]. ,Function:Assembles with the antigen receptor of B lymphocytes in order to decrease the threshold for antigen receptor-dependent stimulation. ,online information:CD19 mutation db ,PTM:Phosphorylated on serine and threonine upon DNA damage , probably by ATM or ATR. Phosphorylated on tyrosine following B-cell activation. ,similarity:Contains 2 Ig-like C2-type (immunoglobulin-like) domains. ,subunit:Forms a complex with CD21 , CD81 and CD225 in the membrane of mature B cells. Interacts with VAV. Interacts with GRB2 and SOS when phosphorylated on Tyr-348 and/or Tyr-378. Interacts with PLCG2 when phosphorylated on Tyr-409. ,
展开内容