Nucleosomal chromatin,with a diameter of 100Å,supercoils into a 300Å superhelix.The histone that appears to be responsible for this compaction is
A) H4.
B) H3.
C) H2.
D) H1.
E) H0.

Question

Quizplus · Accepted Answer

Histone H1 is responsible for the compaction of nucleosomal chromatin into a 300Å superhelix. It binds to the linker DNA between nucleosomes and helps to organize the chromatin into higher-order structures. H4, H3, and H2 are involved in nucleosome formation and stabilizing DNA-protein interactions within the nucleosome, but not in the higher-level compaction seen in chromatin supercoiling. H0 is not a known histone protein.

Nucleosomal Chromatin,with a Diameter of 100Å,supercoils into a 300Å Superhelix