mrn-ctip,dna2,exo1等核酸酶对dna双链断裂(dna double-strand break
cas i 结合的双链靶dna的解旋与r loop结构的形成
ikkβ regulates the repair of dna double-strand breaks induced
rna polymerase gate loop guides the nontemplate dna strand in
single-strand circular att p dna from phagemid dna a(–) is