試題詳解

6. Negative cooperativity of Rep helicase from E. coli means that:
(A) once it binds ssDNA, binding dsDNA is prohibited.
(B) when both subunits are bound to DNA, ATP hydrolysis promotes release of both subunits.
(C) ATP hydrolysis promotes DNA binding of both subunits simultaneously.
(D) when one subunit binds DNA, the other releases from the DNA.
(E) when one subunit binds DNA, the other binds tightly to the DNA.