Download MendeleyCrystal structure of the cytoplasmic domain of the type I TGF beta receptor in complex with FKBP12.
Huse, M., Chen, Y.G., Massague, J., Kuriyan, J.(1999) Cell 96: 425-436
- PubMed: 10025408
- DOI: https://doi.org/10.1016/s0092-8674(00)80555-3
- Primary Citation of Related Structures:
1B6C - PubMed Abstract:
Activation of the type I TGFbeta receptor (TbetaR-I) requires phosphorylation of a regulatory segment known as the GS region, located upstream of the serine/threonine kinase domain in the cytoplasmic portion of the receptor. The crystal structure of a fragment of unphosphorylated TbetaR-I, containing both the GS region and the catalytic domain, has been determined in complex with the FK506-binding protein FKBP12. TbetaR-I adopts an inactive conformation that is maintained by the unphosphorylated GS region. FKBP12 binds to the GS region of the receptor, capping the TbetaR-II phosphorylation sites and further stabilizing the inactive conformation of TbetaR-I. Certain structural features at the catalytic center of TbetaR-I are characteristic of tyrosine kinases rather than Ser/Thr kinases.
Organizational Affiliation:
Laboratories of Molecular Biophysics, Rockefeller University, New York, New York 10021, USA.
