1 DNA Structures
1.1 DNA double helix
The unwrapped, raw DNA pre-bundling or formation of any structures.
1.2 Nucleosomes
A stack of 2 histone groups to create a spool of 8 histone proteins wrapping DNA
1.3 Histones
Coiler proteins that DNA wraps around to form more advanced structures
- Each group of histones contains 4 parts (hence 4 (per group) x 2
(groups) = 8 histones)
- H3, H4, H2a, H2b are the 4 wrapping proteins
- H1 is the histone that seals the group of 4 together
1.4 Chromatin
Wrapping nucleosomes into a large, fiberous structure
1.5 Chromasome
The entangling 2 chromatin together. This is the structure that is split in half during cell replication
Figure 1: levelsofdna.png
Figure 2: histones.png