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The hammerhead ribozyme is an RNA motif that catalyzes reversible cleavage and ligation reactions at a specific site within an RNA molecule. It is one of several catalytic RNAs (ribozymes) known to occur in nature. It serves as a model system for research on the structure and properties of RNA, and is used for targeted RNA cleavage experiments, some with proposed therapeutic applications. Named for the resemblance of early secondary structure diagrams to a hammerhead shark, hammerhead ribozymes were originally discovered in two classes of plant virus-like RNAs: satellite RNAs and viroids. They are also known in some classes of retrotransposons, including the retrozymes. The hammerhead ribozyme motif has been ubiquitously reported in lineages across the tree of life.

AttributesValues
rdf:type
rdfs:label
  • Ribozim cap de martell (ca)
  • Hammerhead ribozyme (en)
  • Ribozyme en tête de marteau (fr)
  • Рибозим типа hammerhead (ru)
rdfs:comment
  • El ribozim hammerhead o cap de martell és un tipus d'àcid ribonucleic que s'autocatalitza (es talla a si mateix) mitjançant un petit motiu d'estructura secundària conservada que s'anomena cap de martell per la seva forma. La majoria de ARNs hammerhead són subconjunts de dues classes d'ARN patogènic vegetal: els ARN satèl·lit dels RNA vírics i dels viroides. Les reaccions autocatalítiques, les quals foren descrites per primer cop el 1986, són part d'un mecanisme de replicació cíclica. La seqüència del hammerhead és suficient per a l'autocatalització i actua formant una estructura terciària tridimensional conservada. (ca)
  • Рибозимы типа hammerhead — это малые саморазрезающие РНК, которые имеют консервативную последовательность и обнаружены у некоторых вироидов и ассоциированы с сателлитными РНК некоторых вирусов растений. Впервые рибозимы типа hammerhead были открыты у вириоидов растений, такие рибозимы катализировали сиквенс-специфичное разрезание в молекулах РНК благодаря специфической третичной структуре. Вторичная структура напоминает головку молотка — англ. hammerhead. (ru)
  • The hammerhead ribozyme is an RNA motif that catalyzes reversible cleavage and ligation reactions at a specific site within an RNA molecule. It is one of several catalytic RNAs (ribozymes) known to occur in nature. It serves as a model system for research on the structure and properties of RNA, and is used for targeted RNA cleavage experiments, some with proposed therapeutic applications. Named for the resemblance of early secondary structure diagrams to a hammerhead shark, hammerhead ribozymes were originally discovered in two classes of plant virus-like RNAs: satellite RNAs and viroids. They are also known in some classes of retrotransposons, including the retrozymes. The hammerhead ribozyme motif has been ubiquitously reported in lineages across the tree of life. (en)
  • Un ribozyme en tête de marteau (hammerhead ribozyme en anglais) est un segment d'ARN qui catalyse le clivage et la jonction réversibles d'un site spécifique sur une molécule d'ARN. Ces ribozymes sont utilisés comme modèles pour la recherche sur les structures et les propriétés de l'ARN ainsi que dans les expériences de clivage ciblé de l'ARN, certaines en vue d'applications thérapeutiques. Ils tirent leur nom de la ressemblance des premières représentations de leur structure secondaire avec le requin marteau. Ils ont d'abord été identifiés parmi des ARN satellites et des viroïdes puis se sont révélés être très largement distribués à travers de nombreuses formes de vie. (fr)
name
  • Hammerhead HH10 (en)
  • Hammerhead HH9 (en)
  • Hammerhead ribozyme (en)
  • Hammerhead ribozyme HH9 (en)
  • Hammerhead type I (en)
  • Hammerhead type II (en)
  • Hammerhead type III (en)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Full_length_hammerhead_ribozyme.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Hammerhead_ribozyme_ribbons.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Acid_base_hammerhead_ribozyme.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Hammerhead_ribozyme_electron_transfer_mechanism.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Hammerhead_ribozyme_mechanism.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Minimal_and_full_length_hammerhead_sequences.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Minimal_hammerhead_ribozyme_structure.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/RF00008-rscape.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/RF00163-rscape.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/RF02275-rscape.svg
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