definition histone
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histone Medical Definition of histone. : any of various simple water-soluble proteins that are rich in the basic amino acids lysine and arginine and are complexed with DNA in the nucleosomes of eukaryotic chromatin.
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histamine histamine (his´təmēn´) , n a compound found in all cells that is produced by the breakdown of histidine. It is released in allergic, inflammatory reactions and causes dilation of capillaries, decreased blood pressure, increased secretion of gastric juice, and constriction of smooth muscles of the bronchi and uterus.
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Gemstone A gemstone (also called a gem, fine gem, jewel, precious stone or semi-precious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments.
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chromatin Define chromatin: a complex chiefly of DNA and histone in eukaryotic cells that is usually dispersed in the interphase… — chromatin in a sentence a complex chiefly of DNA and histone in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in…
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Fort Myers: Annual Weather Averages Fort Myers: Annual Weather Averages. July is the hottest month in Fort Myers with an average temperature of 28°C (83°F) and the coldest is January at 17°C (62°F) with the most daily sunshine hours at 11 in June. The wettest month is September with an average of 134.9mm of rain.
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overtone overtone. n. 1. (often plural) additional meaning or nuance: overtones of despair. 2. (Classical Music) music acoustics any of the tones, with the exception of the fundamental, that constitute a musical sound and contribute to its quality, each having a frequency that is a multiple of the fundamental frequency.. An ulterior, usually implicit meaning or quality; an implication or a hint: an overtone of anger barely masked; praise with overtones of envy. 2. See harmonic. (ˈəʊvəˌtəʊn).
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What are histones? and why are they important to the cell? · just now. 1  Histones are proteins that are vital in cell division. 2  What Are Histones. 3  Histones are basic proteins of eukaryotes.They form the major structure of chromatin. 4  histones are proteins that aid in the organization of DNA to chromosomes. they are important in gene expression.
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- Patterns of histone modifications are implicated as having a role in directing the level of chromatin compaction, as well as playing roles in multiple functional pathways directing the readout of distinct regions of the genome.hromosomes in eukaryotic cell nuclei are not uniformly organized, but rather contain distinct chromatin elements, with each state having a defined biochemical structure and biological function.
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histogram histogram - a bar chart representing a frequency distribution; heights of the bars represent observed frequencies bar chart, bar graph - a chart with bars whose lengths are proportional to quantities Translations
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- Histone definition: any of a group of basic proteins present in cell nuclei and implicated in the spatial... | Meaning, pronunciation, translations and examples English Dictionary | Thesaurus | Translator | Grammar | Scrabble | Blog
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- ragstone. n. 1. (Geological Science) a hard sandstone or limestone, esp when used for building. Also called: rag or ragg.[C14: from rag 4 + stone].agstone. n. 1. (Geological Science) a hard sandstone or limestone, esp when used for building. Also called: rag or ragg. [C14: from rag 4 + stone].
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What is the function of the histone protein in a chromosome? Thus, within the nucleus, histones provide the energy (mainly in the form of electrostatic interactions) to fold DNA. As a result, chromatin can be packaged into a much smaller volume than DNA alone. Histones are a family of small, positively charged proteins termed H1, H2A, H2B, H3, and H4 (Van Holde, 1988). DNA is negatively charged, due to the phosphate groups in its phosphate-sugar backbone, so histones bind with DNA very tightly.
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- The histone code is a hypothesis that the transcription of genetic information encoded in DNA is in part regulated by chemical modifications to histone proteins, primarily on their unstructured ends.
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Epigenetic Influences and Disease DNA methylation is used in some genes to differentiate which gene copy is inherited from the father and which gene copy is inherited from the mother, a phenomenon known as imprinting. Histones are proteins that are the primary components of chromatin, which is the complex of DNA and proteins that makes up chromosomes.his is the type of epigenetic change that is responsible for the inactivated X chromosome of females. In contrast, methylation of a different lysine (K4) on the same histone (H3) is a marker for active genes (Egger et al ., 2004).
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histone Medical Definition of HISTONE. : any of various simple water-soluble proteins that are rich in the basic amino acids lysine and arginine and are complexed with DNA in the nucleosomes of eukaryotic chromatin.ADVERTISEMENT.efinition of HISTONE. : any of various simple water-soluble proteins that are rich in the basic amino acids lysine and arginine and are complexed with DNA in the nucleosomes of eukaryotic chromatin. ADVERTISEMENT.
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- In chemistry, a ketone (alkanone) /ˈkiːtoʊn/ is an organic compound with the structure RC(=O)R', where R and R' can be a variety of carbon-containing substituents. Ketones and aldehydes are simple compounds that contain a carbonyl group (a carbon-oxygen double bond).
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- histogen. n. 1. (Botany) (formerly) any of three layers in an apical meristem that were thought to give rise to the different parts of the plant: the apical meristem is now regarded as comprising two layers. See corpus, tunica.a Regenerative Medicine company) and is on the Surgical Faculty for the Procedural Dermatology Fellowship at the University of California at Irvine, Dermatology Faculty, Western University/Pacific Hospital, Long Beach, California and Michigan State University, Dermatology Faculty.
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histone Define histone: any of various simple water-soluble proteins that are rich in the basic amino acids lysine and arginine and are complexed with DNA in… any of various simple water-soluble proteins that are rich in the basic amino acids lysine and arginine and are complexed with DNA in the…
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What does histology mean? · just now. Report Abuse. C Histology (compound of the Greek words: ἱστός tissue, and -λογία -logia) is the study of the microscopic anatomy of cells and tissues of plants and animals. It is performed by examining a thin slice (section) of tissue under a light microscope or electron microscope. The ability to visualize or differentially identify microscopic structures is frequently enhanced through the use of histological stains. Histology is an essential tool of biology and medicine.
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- Definition of HISTOPATHOLOGY. 1. : a branch of pathology concerned with the tissue changes characteristic of disease.2. : the tissue changes that affect a part or accompany a disease. — his·to·path·o·log·ic \-ˌpa-thə-ˈlae-ˈlä\ jik or·his·to·path·o·log·i \-cal-ji\ kəl. adjectiveefinition of HISTOPATHOLOGY. 1. : a branch of pathology concerned with the tissue changes characteristic of disease.
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Histogram A histogram is a graphical representation of the distribution of numerical data. It is an estimate of the probability distribution of a continuous variable (quantitative variable) and was first introduced by Karl Pearson.he etymology of the word histogram is uncertain. Sometimes it is said to be derived from the Ancient Greek ἱστός (histos) – anything set upright (as the masts of a ship, the bar of a loom, or the vertical bars of a histogram); and γράμμα (gramma) – drawing, record, writing.
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- Full Definition of BROWNSTONE. 1. : a reddish-brown sandstone used for building. 2.: a dwelling faced with brownstone. See brownstone defined for English-language learners. See brownstone defined for kids.ADVERTISEMENT.ull Definition of BROWNSTONE. 1. : a reddish-brown sandstone used for building. 2. : a dwelling faced with brownstone. See brownstone defined for English-language learners. See brownstone defined for kids. ADVERTISEMENT.
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What is the function of the histone protein in a chromosome? Thus, within the nucleus, histones provide the energy (mainly in the form of electrostatic interactions) to fold DNA. As a result, chromatin can be packaged into a much smaller volume than DNA alone. Histones are a family of small, positively charged proteins termed H1, H2A, H2B, H3, and H4 (Van Holde, 1988).
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stone stone (countable and uncountable, plural stones or ) (see usage notes) ( 1 uncountable) A hard earthen substance that can form large rocks. 2  A small piece of stone, a pebble. 3  A gemstone, a jewel, especially a diamond. ( Britain, plural: stone) A unit of mass equal to 14 pounds.
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"The Meaning of ""histo-, hist-""" Words related to this meaning. grammar is modifier. histo- is a type of prefix. Similar terms: hist, histo. A prefix added to the start of a word. Indicates that living tissue modifies the word. Created to expand meanings. Can be used with many words to form new words.
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chromatin Medical Definition of CHROMATIN. : a complex of a nucleic acid with basic proteins (as histone) in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in mitosis and meiosis.