Transcription


Transcription
Making an RNA copy from a sequence of DNA (a gene). Transcription is the first step in gene expression.
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Transfer of genetic code information from one kind of nucleic acid to another, especially with reference to the process by which a base sequence of messenger RNA is synthesized (by an RNA polymerase) on a template of complementary DNA.
- reverse t. reversal of the normal pattern of t. (from DNA to RNA); the effective means is the viral enzyme reverse transcriptase.

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tran·scrip·tion tran(t)s-'krip-shən n the process of constructing a messenger RNA molecule using a DNA molecule as a template with resulting transfer of genetic information to the messenger RNA compare REVERSE TRANSCRIPTION, TRANSLATION
tran·scrip·tion·al -shnəl, -shən-əl adj
tran·scrip·tion·al·ly adv

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n.
the process in which the information contained in the genetic code is transferred from DNA to RNA: the first step in the manufacture of proteins in cells. See messenger RNA, translation.

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trans·crip·tion (trans-kripґshən) [L. transcriptio transfer, copy] the process by which a single-stranded RNA with a base sequence complementary to one strand of a double-stranded DNA is synthesized. The enzymes involved are called DNA-dependent RNA polymerases (see under polymerase).

Transcription. Binding of the RNA polymerase at a specific site on DNA to be transcribed (A) is followed by unwinding of a region of the DNA helix and initiation of transcription in a 5′ to 3′ direction (B), producing an RNA transcript complementary to, and hydrogen-bonded with, the template strand of the DNA. The transcript elongates as the polymerase proceeds down the DNA (C), with the helix unwinding before and rewinding after it.


Medical dictionary. 2011.

Synonyms:
, / (to one instrument of a piece intended for another, or for the voice), , / ,


Look at other dictionaries:

  • transcription — [ trɑ̃skripsjɔ̃ ] n. f. • 1338; lat. transcriptio, de transcribere → transcrire 1 ♦ Action de transcrire; son résultat. ⇒ copie, enregistrement, report. Dr. fr. Transcription à l état civil. Transcription hypothécaire : « formalité consistant… …   Encyclopédie Universelle

  • Transcription — may refer to:*Transcription (linguistics), the conversion of spoken words into written language. Also the conversion of handwriting, or a photograph of text into pure text *Transcription (genetics), the process of copying DNA to RNA by an enzyme… …   Wikipedia

  • Transcription — Tran*scrip tion (tr[a^]n*skr[i^]p sh[u^]n), n. [Cf. F. transcription, L. transcriptio a transfer.] 1. The act or process of transcribing, or copying; as, corruptions creep into books by repeated transcriptions. [1913 Webster] 2. A copy; a… …   The Collaborative International Dictionary of English

  • transcription — Transcription. s. f. v. L s & le p. se prononcent. L Action de celuy qui transcrit. Je vous donneray tant pour la transcription de ce livre …   Dictionnaire de l'Académie française

  • transcription — transcription. См. транскрипция. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • transcription — index record, transcript Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • transcription — фр. [транскрипсьо/н], нем. [транскрипцио/н], англ. [транскри/пшн] trascrizione ит. [траскрицио/нэ] транскрипция (перелож. произведения для др. инструм. или голосов) …   Словарь иностранных музыкальных терминов

  • transcription — (n.) 1590s, from L. transcriptionem, noun of action from pp. stem of transcribere (see TRANSCRIBE (Cf. transcribe)) …   Etymology dictionary

  • transcription —  Transcription  Транскрипция   Процесс синтеза РНК с использованием ДНК в качестве матрицы, происходящий во всех живых клетках. Другими словами, это перенос генетической информации с ДНК на РНК. Транскрипция катализируется ферментом ДНК зависимой …   Толковый англо-русский словарь по нанотехнологии. - М.

  • transcription — ► NOUN 1) a transcript. 2) the action or process of transcribing. 3) a piece of music transcribed for a different instrument, voice, etc …   English terms dictionary

  • transcription — [tran skrip′shən] n. [L transcriptio < transcriptus: see TRANSCRIPT] 1. the act or process of transcribing 2. something transcribed; specif., a) a transcript; copy b) an arrangement of a piece of music for an instrument, voice, or ensemble… …   English World dictionary

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