<prompt> Unwinding of DNA is done byDNA polymeraseDNA primaseHelicaseDNA ligase  <response>: In addition to binding to the nucleosome, the H1 protein binds to the linker DNA approximately 20-80 nucleotides in length region between nucleosomes, helping stabilize the zig-zagged 30 nm chromatin fiber Ref-Sathyanarayana 4e p360 