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Histones in Biological Definition

Chromatin

... and involves nuclear protein exchange. The histones are mostly displaced, and replaced by protamines ... DNA strand. (2) Chromatin strand ( DNA with histones ). (3) Condensed chromatin during interphase ... and involves nuclear protein exchange. The histones are mostly displaced, and replaced by protamines, ...

Chromosome

... inside the nucleus , where it wraps around histones (structural proteins , Fig. 1), and where this ... microscope . Prokaryotes do not possess histones or nuclei. In its relaxed state, the DNA can be ... DNA strand. (2) Chromatin strand ( DNA with histones ). (3) Chromatin during interphase with ...

Histone

... In biology, histones are the chief proteins of chromatin . They ... cells . Bacteria do not have histones, but histones are found in certain Archaea, namely Euryarchaea. These archaeal histones may well resemble the evolutionary precursors to ...

DNA

... must compact or "package" DNA to carry it within them. This is one of the functions of the chromosomes, which contain spool-like proteins known as histones , around which DNA winds. Different helix geometries The DNA helix can assume one of three slightly different geometries, of which the "B" ...

Nucleoplasm

... a highly viscous solid containing the chromosomes and nucleoli. Chromosomes contain information encoded in DNA attached to proteins called histones and are usually arranged in to a dense network called chromatin. Nucleoli are granular structures which make ribonucleic DNA (rDNA) and assemble it ...

Nucleosome

... consists of nucleosomes. Nucleosomes can be seen with an electron microscope as bead-like structures along the DNA. Structure The histones make up the central core particle of the nucleosome. The DNA is wrapped around this protein complex in two turns, with each turn consisting of ...
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