Article
Rationalizing 5000-fold differences in receptor-binding rate constants of four cytokines.
Biophysical journal - 7 Sept 2011
Pang Xiaodong, Qin Sanbo, Zhou Huan-Xiang
Abstract excerpt
The four cytokines erythropoietin (EPO), interleukin-4 (IL4), human growth hormone (hGH), and prolactin (PRL) all form four-helix bundles and bind to type I cytokine receptors. However, their receptor-binding rate constants span a 5000-fold range. Here, we quantitatively rationalize these vast differences in rate constants by our transient-complex theory for protein-protein association. In the transient complex,...
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