Solenoid (DNA) Jump to navigation Jump to search. 30 nm chromatin fibre - solenoid structure. The solenoid structure of chromatin is a model for the structure of the 30 nm fibre. It is a secondary chromatin structure which helps to package eukaryotic DNA into the nucleus.What is the solenoid of DNA-helix?
A term solenoid itself defines the winding of the DNA-helix. In eukaryotes, the DNA is compressed into the chromatin fibres by the association of DNA-linking histone proteins. The protein complex (histone octamer) attached to the core DNA is termed as a nucleosome. Then, the H1 protein seals the wrapped DNA around the core protein.What is the size of the chromatid of a solenoid?
This solenoid structure undergoes further coiling to produce a chromatin fibre of 30-80 nm and then a chromatid of 700 nm. (2 nm diameter) (10 nm diameter) (30 nm diameter) (30-80 nm diameter) (700 nm diameter) (1400 nm diameter)What is a solenoid model?
This post describes the definition, important terms, overview and formation of the solenoid model. The solenoid model represents the organization of the nucleosome within the 30 nm wide chromatin fibre. The term solenoid itself defines the winding of the DNA helix.