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Question
Biology
Posted 7 months ago
Briefly describe what is found in a nucleosome
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Answer from Sia
Posted 7 months ago
Answer
A nucleosome consists of DNA wrapped around histone proteins.
Solution
a
DNA: A segment of DNA that is about 147 base pairs in length wraps around a histone octamer
b
Histone octamer: This is composed of eight histone proteins, typically two each of H2A, H2B, H3, and H4
c
Linker DNA: This is the stretch of DNA that connects one nucleosome to the next and can vary in length
d
H1 histone: Often associated with the nucleosome, it helps in the packing of the nucleosome into more compact structures by binding to the linker DNA
Key Concept
Nucleosome structure
Explanation
A nucleosome is the fundamental unit of chromatin, consisting of a segment of DNA wound around a core of histone proteins, playing a crucial role in DNA packaging within the nucleus.
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