Conformation of full-length Bruton tyrosine kinase (Btk) from synchrotron X-ray solution scattering.

ABSTRACT: Brutons's tyrosine kinase (Btk) is a non-receptor protein tyrosine kinase (nrPTK) essential for the development of B lymphocytes in humans and mice. Like Src and Abl PTKs, Btk contains a conserved cassette formed by SH3, SH2 and protein kinase domains, but differs from them by the presence of an N-terminal PH domain and the Tec homology region. The domain structure of Btk was analysed using X-ray synchrotron radiation scattering in solution. Low resolution shapes of the full-length protein and several deletion mutants determined ab initio from the scattering data indicated a linear arrangement of domains. This arrangement was further confirmed by rigid body modelling using known high resolution structures of individual domains. The final model of Btk displays an extended conformation with

SUBMITTER: Marquez JA 

PROVIDER: S-EPMC212716 | biostudies-literature | 2003 Sep

REPOSITORIES: biostudies-literature