Kinetoplast DNA from Trypanosoma vivax and T. congolense. 1985

P Borst, and F Fase-Fowler, and P J Weijers, and J D Barry, and L Tetley, and K Vickerman

We have analysed kinetoplast DNA (kDNA) of the African trypanosomes Trypanosoma vivax and T. congolense. The maxi-circles from these organisms resemble those of T. brucei in size, but only to a limited extent in sequence as judged from restriction enzyme digests and DNA X DNA hybridization. The kDNA networks of T. vivax have three distinguishing features: they contain the highest maxi-circle concentration of any kDNA (at least twice that of T. brucei); they contain the smallest mini-circles (465 bp) yet found thus far and the width of the kDNA nucleoid in thin sections is correspondingly small (55 nm against 91 nm for T. brucei); they contain a substantial fraction of mini-circle dimers.

UI MeSH Term Description Entries
D004270 DNA, Circular Any of the covalently closed DNA molecules found in bacteria, many viruses, mitochondria, plastids, and plasmids. Small, polydisperse circular DNA's have also been observed in a number of eukaryotic organisms and are suggested to have homology with chromosomal DNA and the capacity to be inserted into, and excised from, chromosomal DNA. It is a fragment of DNA formed by a process of looping out and deletion, containing a constant region of the mu heavy chain and the 3'-part of the mu switch region. Circular DNA is a normal product of rearrangement among gene segments encoding the variable regions of immunoglobulin light and heavy chains, as well as the T-cell receptor. (Riger et al., Glossary of Genetics, 5th ed & Segen, Dictionary of Modern Medicine, 1992) Circular DNA,Circular DNAs,DNAs, Circular
D004587 Electrophoresis, Agar Gel Electrophoresis in which agar or agarose gel is used as the diffusion medium. Electrophoresis, Agarose Gel,Agar Gel Electrophoresis,Agarose Gel Electrophoresis,Gel Electrophoresis, Agar,Gel Electrophoresis, Agarose
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014345 Trypanosoma A genus of flagellate protozoans found in the BLOOD and LYMPH of vertebrates and invertebrates, both hosts being required to complete the life cycle. Nannomonas,Trypanosomes,Nannomona,Trypanosome
D014348 Trypanosoma congolense A species of Trypanosome hemoflagellates that is carried by tsetse flies and causes severe anemia in cattle. These parasites are also found in horses, sheep, goats, and camels. Trypanosoma (Nannomonas) congolense,Trypanosoma congolenses,congolense, Trypanosoma
D018105 DNA, Kinetoplast DNA of kinetoplasts which are specialized MITOCHONDRIA of trypanosomes and related parasitic protozoa within the order KINETOPLASTIDA. Kinetoplast DNA consists of a complex network of numerous catenated rings of two classes; the first being a large number of small DNA duplex rings, called minicircles, approximately 2000 base pairs in length, and the second being several dozen much larger rings, called maxicircles, approximately 37 kb in length. Kinetoplast DNA,Kinetoplast DNA Maxicircles,Kinetoplast DNA Minicircles,kDNA,kDNA Maxicircles,kDNA Minicircles,DNA Maxicircles, Kinetoplast,DNA Minicircles, Kinetoplast,Maxicircles, Kinetoplast DNA,Maxicircles, kDNA,Minicircles, Kinetoplast DNA,Minicircles, kDNA

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