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Overview of Transcription definitions

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  • Transcription
    Synthesis of an RNA molecule using a DNA template, producing a complementary RNA copy in a specific direction.
  • RNA Polymerase
    Enzyme responsible for creating RNA from a DNA template, with different types producing various RNA molecules.
  • Template Strand
    DNA strand used by RNA polymerase to assemble a complementary RNA sequence during synthesis.
  • Coding Strand
    DNA strand whose sequence matches the RNA product, except for uracil replacing thymine in RNA.
  • Ribosomal RNA
    RNA type produced by specific polymerases, forming the structural and functional core of ribosomes.
  • Transfer RNA
    RNA molecule that helps decode messenger RNA sequences into proteins during translation.
  • Messenger RNA
    RNA copy of a gene that carries genetic information from DNA to the ribosome for protein synthesis.
  • Noncoding RNA
    RNA molecules not translated into proteins but often involved in gene regulation and other cellular roles.
  • Initiation
    First stage of transcription where RNA polymerase binds to DNA and begins RNA synthesis.
  • Elongation
    Stage of transcription where RNA polymerase adds nucleotides to the growing RNA chain.
  • Termination
    Final stage of transcription where RNA synthesis ends and the RNA molecule is released.
  • Upstream
    DNA region located before the gene start site, often containing regulatory elements.
  • Downstream
    DNA region located after the gene start site, extending beyond the coding sequence.
  • 5' to 3' Direction
    Orientation in which RNA is synthesized, with new nucleotides added to the 3' end of the growing strand.
  • Uracil
    RNA base that replaces thymine, pairing with adenine during RNA synthesis.