Missense mutations affecting a conserved cysteine pair in the TH domain of Btk
Tec family protein tyrosine kinases have in their N-terminus two domains, The PH domain is followed by Tec homology (TH) domain, which consists of two motifs, The first pattern, Btk motif, is also present in some Pas GAP molecules, C-terminal half of the TH domain, a proline-rich region, has been shown to bind to SH3 domains, Mutations in Bruton's tyrosine kinase (Btk) belonging to the Tec family
