Histone

spinqualitylabelsall models Yeast H3 (green), H4 (pink) and anti-silencing protein (grey) complex with sulfate, glycerol and Zn+2 ion (grey), 2hue Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Histones (H) are the major protein components of chromatin which help to pack the DNA in the nucleosomes. H2A, H2B, H3 and H4 are core histones while H1 and H5 are linker histones. The nucleosome is the repeated unit of the chromatin consisting of a core which contains 8 histone molecules (two copies of H2A, H2B, H3 and H4) wrapped by ca. 140 base pairs of DNA. The chromatin is made of nucleosome cores separated by a linker region of upto 80 base pairs of DNA associated with histones H1 and H5. For the hyperthermophilic histones see Archaeal Histones. For nucleosome structure see User:Eric Martz/Nucleosomes Nucleosome structure Nucleosomes Nucleosome structure (Spanish) 3D Structures of histone Histone 3D structures

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Ann Taylor, Michal Harel, Alexander Berchansky, Karsten Theis