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What is the name of he structure in which DNA molecules histones and nucleosomes are found?
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What does a nucleoid consist of?
CompositionExperimental evidence suggests that the nucleoid is largely composed of DNA, about 60%, with a small amount of RNA and protein. The latter two constituents are likely to be mainly messenger RNA and the transcription factor proteins found regulating the bacterial genome. Proteins helping to maintain the supercoiled structure of the nucleic acid are known as nucleoid proteinsor nucleoid-associated proteins and are distinct from histones of eukaryotic nuclei. In contrast to histones, the DNA-binding proteins of the nucleoid do not form nucleosomes, in which DNA is wrapped around a protein core. Instead, these proteins often use other mechanisms to promote compaction such as DNA bending or DNA-DNA bridging.
What are chromatin proteins called?
Chromatin is the name of the mixture of DNA and proteins that are found in the nucleus of a cell. Depending on the stage of the cellular cycle, the chromatin may be structured differently, ranging from loosely to tightly structured.
What is the molecular structure of an apple?
An apple is a collection of thousands of different molecules. Some molecules found in apples are starches, proteins, fats, sugars, pectins, and water.
Photosystems are found in the structure called what?
There are two photosystems, and they can be found embedded in the thylakoid membranes. They are linked by electron transport molecules.
Why is DNA frequently found associated with proteins inside of cells?
Histones are proteins which are associated with DNA and from nucleosomes, which pack the DNA. Transcription factors, proteins involved in DNA synthesis, replication...
Histones are found in?
the nucleosome
To help with biology homework what are histones?
Histones are proteins found in eukaryotic cell nuclei. They are high in alkaline. Histones package and order the DNA into units that are called nucleosomes.
What type of molecules are found in DNA?
DNA is a molecule. There are also a bunch of proteins/molecules called histones that organise the DNA molecule into a condensed state.
What is the DNA called when it is found loose in the nucleus and is wrapped around histones?
This tertiary structure of DNA is commonly called "beads on a string."
What are histone?
HistonesHistones are proteins that aid in the organization of DNA into chromosomes. There are four types of histones found in chromatin: H2A, H2B, H3, and H4. Two of each histone comprise a protein core, a nucleosome, which DNA wraps around twice. What results is a "bead on a string" model in which the nucleosomes are the beads and the linker DNA binds them together. Another characteristic of histones are the protein tails that extend outward from the "bead." The tails and the degree of their acetylation is an important factor in gene expression. See related links and images below.
What does a nucleoid consist of?
CompositionExperimental evidence suggests that the nucleoid is largely composed of DNA, about 60%, with a small amount of RNA and protein. The latter two constituents are likely to be mainly messenger RNA and the transcription factor proteins found regulating the bacterial genome. Proteins helping to maintain the supercoiled structure of the nucleic acid are known as nucleoid proteinsor nucleoid-associated proteins and are distinct from histones of eukaryotic nuclei. In contrast to histones, the DNA-binding proteins of the nucleoid do not form nucleosomes, in which DNA is wrapped around a protein core. Instead, these proteins often use other mechanisms to promote compaction such as DNA bending or DNA-DNA bridging.
What are chromatin proteins called?
Chromatin is the name of the mixture of DNA and proteins that are found in the nucleus of a cell. Depending on the stage of the cellular cycle, the chromatin may be structured differently, ranging from loosely to tightly structured.
What is the molecular structure of an apple?
An apple is a collection of thousands of different molecules. Some molecules found in apples are starches, proteins, fats, sugars, pectins, and water.
Photosystems are found in the structure called what?
There are two photosystems, and they can be found embedded in the thylakoid membranes. They are linked by electron transport molecules.
What is the protein around which chromosomal DNA is coiled?
Histones are the most abundant proteins found in chromosomes.
Why is DNA frequently found associated with proteins inside of cells?
Histones are proteins which are associated with DNA and from nucleosomes, which pack the DNA. Transcription factors, proteins involved in DNA synthesis, replication...
How are the long DNA molecules found in eukaryotes packed into short chromosome.?
Because the DNA molecules are twisted around and around. Almost like if you start twisting a string it will curl and then curl again upon itself.
