kinetoplast

An intensely staining rod-, disc-, or spherical-shaped extranuclear DNA structure found in parasitic flagellates (family Trypanosomatidae) near the base of the flagellum, posterior to the blepharoplast, and often at right angles to the nucleus. Electron micrographs show it to be part of a single giant mitochondrion filling most of the cytoplasm of amastigote flagellates, the k. portion being visible by light microscopy. DNA of the k. is termed kDNA to distinguish it from nuclear DNA, or nDNA. The k. divides independently, along with the basal body, prior to nuclear division. The term k. formerly included parabasal body and blepharoplast in a locomotory apparatus, but is now recognized as a distinct organelle of most trypanosomatids. SEE ALSO: parabasal body. [kineto- + G. plastos, formed]

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ki·neto·plast kə-'net-ə-.plast, kī- n an extranuclear DNA-containing organelle of kinetoplastid protozoans that is usu. found in an elongated mitochondrion located adjacent to the basal body
ki·neto·plas·tic -.net-ə-'plas-tik adj

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ki·ne·to·plast (kĭ-neґto-plast) [kineto- + -plast] a large rod-shaped or cylindrical, DNA-rich, independently replicating cytoplasmic organelle located in close association with the basal body (with which it may seem to be fused) and found within the elongated mitochondrion of protozoa of the order Kinetoplastida. Called also kinetonucleus.

Medical dictionary. 2011.

Look at other dictionaries:

  • kinetoplast — kinetoplast. См. кинетопласт. (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.

  • kinetoplast — [ki net′ə plast΄, kinēt′ə plast΄] n. 〚 KINETO + PLAST〛 a cytoplasmic structure lying at the base of the flagellum in many flagellated protists * * * ki·net·o·plast (kə nĕtʹə plăst , nēʹtə , kī ) n. An independently replicating structure lying… …   Universalium

  • Kinetoplast — Kinetoplast, Besonderheit der zu den Protomonadida (Zooflagellata) gehörenden Trypanosomidae: DNA Anhäufung hinter dem Basalkörper der Geißel innerhalb des einzigen Mitochondriums …   Deutsch wörterbuch der biologie

  • kinetoplast — [ki net′ə plast΄, kinēt′ə plast΄] n. [ KINETO + PLAST] a cytoplasmic structure lying at the base of the flagellum in many flagellated protists …   English World dictionary

  • Kinetoplast — A Kinetoplast is a disk shaped mass of circular DNAs inside a large mitochondrion that contains many copies of the mitochondrial genome. [cite journal |author=Shapiro TA, Englund PT |title=The structure and replication of kinetoplast DNA |journal …   Wikipedia

  • kinetoplast — noun Etymology: International Scientific Vocabulary Date: 1925 a DNA containing organelle especially of trypanosomes usually found in an elongated mitochondrian located adjacent to the basal body …   New Collegiate Dictionary

  • kinetoplast — (ki ne to plast) A special structure in the mitochondrion of kinetoplastid protozoa. It contains the mitochondrial DNA …   Dictionary of microbiology

  • kinetoplast — Mass of mitochondrial DNA, usually adjacent to the flagellar basal body, in flagellate protozoa …   Dictionary of molecular biology

  • kinetoplast — noun A disk shaped mass of circular DNA inside a large mitochondrion, found specifically in protozoa of the class Kinetoplastea (kinetoplastids) …   Wiktionary

  • Kinetoplast — Kinetoplạst   [zu griechisch kineĩn »bewegen«] der, en/ en, einziges großes Mitochondrium bei Trypanosomen u. a. Flagellaten, das in der Nähe des Basalkörpers der Geißel liegt und wahrscheinlich für deren Funktionstüchtigkeit notwendig ist …   Universal-Lexikon

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