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  2. Open reading frame - Wikipedia

    en.wikipedia.org/wiki/Open_reading_frame

    That start codon (not necessarily the first) indicates where translation may start. The transcription termination site is located after the ORF, beyond the translation stop codon. If transcription were to cease before the stop codon, an incomplete protein would be made during translation. [3]

  3. Translation regulation by 5′ transcript leader cis-elements

    en.wikipedia.org/wiki/Translation_regulation_by_5...

    Alterations in translation of mRNA into proteins rapidly modulates the proteome without changing upstream steps such as transcription, pre-mRNA splicing, and nuclear export. [1] The strict regulation of translation in both space and time is in part governed by cis-regulatory elements located in 5′ mRNA transcript leaders (TLs) and 3 ...

  4. Five prime untranslated region - Wikipedia

    en.wikipedia.org/wiki/Five_prime_untranslated_region

    The 5′ UTR begins at the transcription start site and ends one nucleotide (nt) before the initiation sequence (usually AUG) of the coding region. In prokaryotes, the length of the 5′ UTR tends to be 3–10 nucleotides long, while in eukaryotes it tends to be anywhere from 100 to several thousand nucleotides long. [3]

  5. Transcription (biology) - Wikipedia

    en.wikipedia.org/wiki/Transcription_(biology)

    Regulation of transcription in mammals. An active enhancer regulatory region of DNA is enabled to interact with the promoter DNA region of its target gene by the formation of a chromosome loop. This can initiate messenger RNA (mRNA) synthesis by RNA polymerase II (RNAP II) bound to the promoter at the transcription start site of the gene. The ...

  6. Transcriptional regulation - Wikipedia

    en.wikipedia.org/wiki/Transcriptional_regulation

    In the absence of other regulatory elements, a promoter's sequence-based affinity for RNA polymerases varies, which results in the production of different amounts of transcript. The variable affinity of RNA polymerase for different promoter sequences is related to regions of consensus sequence upstream of the transcription start site. The more ...

  7. Kozak consensus sequence - Wikipedia

    en.wikipedia.org/wiki/Kozak_consensus_sequence

    A wrong start site can result in non-functional proteins. [3] As it has become more studied, expansions of the nucleotide sequence, bases of importance, and notable exceptions have arisen. [1] [4] [5] The sequence was named after the scientist who discovered it, Marilyn Kozak. Kozak discovered the sequence through a detailed analysis of DNA ...

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