spacer DNA


spacer DNA
The DNA sequence between genes. In bacteria, only a few nucleotides long. In eukaryotes, can be extensive and include repetitive DNA, comprising the majority of the DNA of the genome. The term is used particularly for the spacer DNA between the many tandemly-repeated copies of the ribosomal RNA genes.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Spacer DNA — are regions of non transcribed DNA between tandemly repeated genes, such as ribosomal RNA genes in eukaryotes.Its function is probably to do with ensuring the high rates of transcription associated with these genes.The dNA sequence between genes …   Wikipedia

  • spacer DNA — nontranscribed DNA sequences occurring between functional gene regions in eukaryotic and some viral genomes; they may be long and may include many repetitive sequences …   Medical dictionary

  • spacer — spac·er spā sər n a region of chromosomal DNA between genes that is not transcribed into messenger RNA and is of uncertain function * * * spac·er (spāsґər) 1. something that separates or keeps other things apart; see spacer DNA, under… …   Medical dictionary

  • DNA barcoding — is a taxonomic method that uses a short genetic marker in an organism s DNA to identify it as belonging to a particular species. It differs from molecular phylogeny in that the main goal is not to determine classification but to identify an… …   Wikipedia

  • Spacer (Biologie) — Spacer oder Trenn DNA Sequenzen findet man auf der DNA zwischen Genen, z. B. zwischen den gruppenweise angeordneten rRNA Genen (rDNA). Im Falle der rRNA Gene werden die Spacer Sequenzen zusammen mit den rRNA Genen in ein einziges… …   Deutsch Wikipedia

  • Spacer — (englisch, wörtlich etwa „Abstandhalter“) bezeichnet: Distanzring, Distanzstück o. ä. Spacer (Biologie), in der Biologie Sequenzen auf der DNA zwischen einzelnen Genen Spacer (Halbleitertechnik), in der Halbleitertechnik erwünschte… …   Deutsch Wikipedia

  • Spacer — Spacer, in der DNA von Prokaryoten und Eukaryoten vorhandene nichtinformative Abschnitte unterschiedlicher Länge, die die Strukturgene voneinander trennen, für deren Regulation Bedeutung haben und nicht transkribiert werden …   Deutsch wörterbuch der biologie

  • DNA vaccination — The making of a DNA vaccine. DNA vaccination is a technique for protecting an organism against disease by injecting it with genetically engineered DNA to produce an immunological response. Nucleic acid vaccines are still experimental, and have… …   Wikipedia

  • spacer sequence — A DNA sequence separating neighbouring genes; spacer sequences are not usually transcribed …   Glossary of Biotechnology

  • spacer — I. ˈspāsə(r) noun ( s) : one that spaces: as a. : a device or piece for holding two members at a given distance from each other trucks which have spacers between dual tires Motor Transportation in the West wood spacers holding the si …   Useful english dictionary


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