期刊
CHEMISTRY & BIOLOGY
卷 15, 期 11, 页码 1149-1155出版社
CELL PRESS
DOI: 10.1016/j.chembiol.2008.09.011
关键词
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资金
- U.S. Department of Defense
- Research Advisory Committee of Children's Hospital of Pittsburgh
- American Cancer Society
The basic-helix-loop-helix-leucine-zipper domains of the c-Myc oncoprotein and its obligate partner Max are intrinsically disordered (ID) monomers that undergo coupled folding and binding upon heterodimerization. We have identified the binding sites and determined the structural means by which two unrelated small molecules, 10058-F4 and 10074-G5, bind c-Myc and stabilize the ID monomer over the highly ordered c-Myc-Max heterodimer. In solution, the molecules bind to distinct regions of c-Myc and thus limit its ability to interact with Max and assume a more rigid and defined conformation. The identification of multiple, specific binding sites on an ID domain suggests that small molecules may provide a general means for manipulating the structure and function of ID proteins, such as c-Myc.
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