histones are a kind of protein. their main function is to link the DNA molecule. the length of a DNA molecule( totally stretched) is more than 2 meters. the histones are sherical in shape & are found inside the nucleus of the cell closely attached to the DNA molecule.the DNA molecule wraps around thousands of these histone proteins hence enclosing the long DNA molecule inside the nucleus. these proteins also provide strenght to the molecule.
2006-07-02 01:09:06
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answer #1
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answered by mridul 2
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A histone is a generic DNA binding protein that double stranded DNA will wind around to form more compact structures. The positive residues on the protein interact with negative charges on the phosphate backbone of the DNA coil, allowing it to 'stick' to the protein. Histones (of which there are several different histone proteins) will form complexes with each other, each holding on to DNA and keeping it sequestered and condensed. Histones can be removed through modification of the protein (histone acetylases for one). In this manner, histones will regulate the binding of other proteins to DNA, either for transcription or synthesis. The Histone and DNA complex is called chromatin, and makes up the entire chromosome when it compact.
2006-06-30 19:47:15
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answer #2
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answered by michelsa0276 4
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histone of DNA? then it is a protein, the DNA is made of 8 histone molecules, these histone molecules are bound by linear DNA
2006-07-06 19:59:08
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answer #3
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answered by John C 1
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a histone is a protein that helps wrap around DNA to compact chromosomes.
2006-06-30 19:15:52
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answer #4
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answered by cehelp 5
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In biology, histones are the chief proteins of chromatin
2006-06-30 19:13:29
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answer #5
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answered by googy 2
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not a chem term man
It's bio term
a histone is a protein that helps wrap around DNA to compact chromosomes.
2006-06-30 19:41:13
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answer #6
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answered by PRATT 1
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histone - any of a clas of protein.
2006-06-30 19:34:45
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answer #7
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answered by Freesia 5
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its linker DNA
2006-06-30 19:56:57
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answer #8
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answered by nimisha 1
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