If four atoms A, B, C and D are connected linearly and there is rotation possible along bond BC, dihedral angle on this bond is described as
If four atoms A, B, C and D are connected linearly and there is rotation possible along bond BC, dihedral angle on this bond is described as
Select an option to attempt
Correct Answer: Option B
Explanation
Nucleosome core particle composition: DNA (147 bp of DNA wrapped ~1.65 turns) + an octamer of 4 core histone pairs =. H1 (linker histone) binds to the linker DNA connecting nucleosome core particles (the 'beads' between beads on a string) and to the entry/exit points of DNA around the core. H1 is NOT part of the core octamer. H1 compacts chromatin further by stabilising the 30 nm fibre. There are multiple H1 subtypes (H1.1–H1.5, H1°, H1t). H1 can be removed from chromatin without disrupting the core particle, confirming it is peripheral not core.