Chromatin Chro"ma*tin, n. (Biol.) The deeply staining substance of the nucleus and chromosomes of eukaryotic cells, composed of DNA and basic proteins (such as histones), the DNA of which comprises the predominant physical basis of inheritance. It was, at the beginning of the 20th century, supposed to be the same substance as was then termed {idioplasm} or {germ plasm}. In most eukaryotic cells, there is also DNA in certain plasmids, such as mitochondria, or (in plant cells) chloroplasts; but with the exception of these cytoplasmic genetic factors, the nuclear DNA of the chromatin is believed to contain all the genetic information required to code for the development of an adult organism. In the interphase nucleus the chromosomes are dispersed, but during cell division or meiosis they are condensed into the individually recognizable chromosomes. The set of chromosomes, or a photographic representation of the full set of chromosomes of a cell (often ordered for presentation) is called a karyotype. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

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  • Chromatin — (DAPI Färbung, blau) in einem Mauszellkern. Links mit einem Konfokalmikroskop aufgenommen, rechts mit der verbesserten Auflösung eines 3D SIM Mikroskops. Daneben sind Kernporen (anti NPC, rot) und die Lamina unter der Kernhülle dargestellt (anti… …   Deutsch Wikipedia

  • chromatin — [krō′mətin΄] n. [< CHROMA + IN1] a protoplasmic substance in the nucleus of living cells that readily takes a deep stain: chromatin forms the chromosomes and contains the genes …   English World dictionary

  • Chromatin — Chro ma*tin, n. [Gr. ?, ?, color.] 1. (Biol.) Tissue which is capable of being stained by dyes. [archaic] [1913 Webster] …   The Collaborative International Dictionary of English

  • chromatin — chromatin. См. хроматин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Chromatīn — Chromatīn, s. Pflanzenzelle …   Meyers Großes Konversations-Lexikon

  • Chromatin — Chromatin, Nucleoproteinmaterial, aus dem sich im Teilungskern der Eukaryotenzelle durch Schraubung und Faltung die ⇒ Chromosomen bilden und das im Interphasekern den entschraubten Chromosomen entspricht. C. ist mit basischen Farbstoffen… …   Deutsch wörterbuch der biologie

  • chromatin — 1882, coined 1879 by German anatomist Walther Flemming (1843 1905), from Latinized form of Gk. khromat , the correct comb. form of khroma color (see CHROMA (Cf. chroma)) + chemical suffix IN (Cf. in) (2). Related: Chromatid …   Etymology dictionary

  • Chromatin — The major structures in DNA compaction; DNA, the nucleosome, the 10nm beads on a string fibre, the 30nm fibre and the metaphase chromosome Chromatin is the combination of DNA and proteins that make up the contents of the nucleus of a cell. The… …   Wikipedia

  • Chromatin — Chro|ma|tin 〈[ kro ] n. 11; unz.; Biochem.〉 bei basischen Färbungen sich bes. stark färbende Zellkernbestandteile [zu grch. chroma „Farbe“] * * * Chro|ma|tin [↑ Chromo (2) u. ↑ in (3)], das; s, e: ↑ Histon. * * * Chromatin   [ …   Universal-Lexikon

  • chromatin — chromatinas statusas T sritis chemija apibrėžtis DNR, histonų ir kitų baltymų kompleksas, sudarantis eukarijotinių ląstelių chromosomas. atitikmenys: angl. chromatin rus. хроматин …   Chemijos terminų aiškinamasis žodynas

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