Download MendeleyPolymerization of the SAM domain of TEL in leukemogenesis and transcriptional repression.
Kim, C.A., Phillips, M.L., Kim, W., Gingery, M., Tran, H.H., Robinson, M.A., Faham, S., Bowie, J.U.(2001) EMBO J 20: 4173-4182
- PubMed: 11483520
- DOI: https://doi.org/10.1093/emboj/20.15.4173
- Primary Citation of Related Structures:
1JI7 - PubMed Abstract:
TEL is a transcriptional repressor that is a frequent target of chromosomal translocations in a large number of hematalogical malignancies. These rearrangements fuse a potent oligomerization module, the SAM domain of TEL, to a variety of tyrosine kinases or transcriptional regulatory proteins. The self-associating property of TEL-SAM is essential for cell transformation in many, if not all of these diseases. Here we show that the TEL-SAM domain forms a helical, head-to-tail polymeric structure held together by strong intermolecular contacts, providing the first clear demonstration that SAM domains can polymerize. Our results also suggest a mechanism by which SAM domains could mediate the spreading of transcriptional repression complexes along the chromosome.
Organizational Affiliation:
Department of Chemistry and Biochemistry, DOE Laboratory of Structural Biology and Molecular Medicine, University of California, Los Angeles, CA, USA.
