transcription termination

transcription termination
Транскрипции окончание — остановка транскрипции гена в соответствующую иРНК (см. РНК информационная). У прокариот встречается rho-фактор-независимая остановка транскрипции. Процесс прекращения (остановки) транскрипции у эукариот пока мало известен, но, по-видимому, включает различные сигналы для разных ДНК-зависимых РНК-полимераз. РНК-полимераза I узнает терминирующую последовательность из 18 п.о., с которой связывается вспомогательный белок, РНК-полимераза II, возможно, покидает матрицу после контакта со специфической вторичной структурой ДНК в сайте транскрипции и РНК-полимераза III прекращает транскрипцию при встрече с U4-последовательностью внутри области, богатой GC.

Англо-русский толковый словарь генетических терминов. — М.: Изд-во ВНИРО. . 1995.

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Смотреть что такое "transcription termination" в других словарях:

  • Transcription (genetics) — Transcription is the process of creating a complementary RNA copy of a sequence of DNA.[1] Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language that can be converted back and forth from DNA to RNA by …   Wikipedia

  • Termination factor — Termination is part of the process of transcribing RNA. In eukaryotes, a termination factor is required to release the newly made (nascent) RNA from the transcription complex. Prokaryote mRNAs often do not require a termination factor: an… …   Wikipedia

  • Termination signal — is at the end of the part of the chromosome being transcribed during transcription of mRNA. It is needed because only parts of the chromosome are transcribed. The beginning part is started at the promoter and then ended at the termination… …   Wikipedia

  • Transcription (linguistics) — Transcription is the conversion into written, typewritten or printed form, of a spoken language source, such as the proceedings of a court hearing. It can also mean the conversion of a written source into another medium, such as scanning books… …   Wikipedia

  • termination signal — In transcription, a nucleotide sequence that specifies RNA chain termination …   Glossary of Biotechnology

  • transcription unit — A segment of DNA that contains signals for the initiation and termination of transcription, and is transcribed into one RNA molecule …   Glossary of Biotechnology

  • Prokaryotic transcription — is the process in which messenger RNA transcripts of genetic material in prokaryotes are produced, to be translated for the production of proteins. Prokaryotic transcription occurs in the cytoplasm alongside translation. Unlike in eukaryotes,… …   Wikipedia

  • Intrinsic termination — (also called Rho independent termination) is a mechanism in both eukaryotes and prokaryotes that causes mRNA transcription to be stopped. In this mechanism, the mRNA contains a sequence that can base pair with itself to form a stem loop structure …   Wikipedia

  • TTF2 — Transcription termination factor, RNA polymerase II, also known as TTF2, is a human gene.cite web | title = Entrez Gene: TTF2 transcription termination factor, RNA polymerase II| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene… …   Wikipedia

  • TTF1 (gene) — Transcription termination factor, RNA polymerase I, also known as TTF1, is a human gene.cite web | title = Entrez Gene: TTF1 transcription termination factor, RNA polymerase I| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene… …   Wikipedia

  • Lambda phage — Taxobox color = violet name = Enterobacteria phage λ image width = 200px image caption = virus group = I ordo = Caudovirales familia = Siphoviridae subfamily = genus = λ like viruses species = λ Phage Enterobacteria phage λ (lambda phage) is a… …   Wikipedia


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