Concept information
Preferred term
DNA, Satellite
Type
-
mesh:Descriptor
Definition
- Highly repetitive DNA sequences found in HETEROCHROMATIN, mainly near centromeres. They are composed of simple sequences (very short) (see MINISATELLITE REPEATS) repeated in tandem many times to form large blocks of sequence. Additionally, following the accumulation of mutations, these blocks of repeats have been repeated in tandem themselves. The degree of repetition is on the order of 1000 to 10 million at each locus. Loci are few, usually one or two per chromosome. They were called satellites since in density gradients, they often sediment as distinct, satellite bands separate from the bulk of genomic DNA owing to a distinct BASE COMPOSITION.
Broader concept
Entry terms
- Satellite DNA
Allowable Qualifier(s)
- administration & dosage (Qualifier)
- adverse effects (Qualifier)
- agonists (Qualifier)
- analysis (Qualifier)
- antagonists & inhibitors (Qualifier)
- biosynthesis (Qualifier)
- blood (Qualifier)
- cerebrospinal fluid (Qualifier)
- chemical synthesis (Qualifier)
- chemistry (Qualifier)
- classification (Qualifier)
- drug effects (Qualifier)
- economics (Qualifier)
- genetics (Qualifier)
- history (Qualifier)
- immunology (Qualifier)
- isolation & purification (Qualifier)
- metabolism (Qualifier)
- pharmacokinetics (Qualifier)
- pharmacology (Qualifier)
- physiology (Qualifier)
- poisoning (Qualifier)
- radiation effects (Qualifier)
- standards (Qualifier)
- supply & distribution (Qualifier)
- therapeutic use (Qualifier)
- toxicity (Qualifier)
- ultrastructure (Qualifier)
- urine (Qualifier)
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/JVR-K0F28P25-G
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