Directional binding of HMG-I(Y) on four-way junction DNA and the molecular basis for competitive binding with HMG-1 and histone H1.


Histone H1, HMG-1 and HMG-I(Y) are mammalian nuclear proteins possessing distinctive DNA-binding domain structures that share the common property of preferentially binding to four-way junction (4H) DNA, an in vitro mimic of the in vivo genetic recombination intermediate known as the Holliday junction. Nevertheless, these three proteins bind to 4H DNA in… (More)


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