From DNA to RNA - Molecular Biology of the Cell - NCBI Bookshelf
网页It differs from DNA chemically in two respects: (1) the nucleotides in RNA are ribonucleotides —that is, they contain the sugar ribose (hence the name ribo nucleic acid) rather than deoxyribose; (2) although, like DNA, RNA contains the bases adenine (A), guanine (G), and cytosine (C), it contains the base uracil (U) instead of the thymine (T) in...
4.5: Transcription of DNA to RNA - Biology LibreTexts
网页Transcription is the first part of the central dogma of molecular biology: DNA → RNA. It is the transfer of genetic instructions in DNA to messenger RNA (mRNA). During transcription, a strand of mRNA is made that is complementary to a strand of DNA. Figure below shows how this occurs.
6.2: The Transcription of DNA into RNA - Biology LibreTexts
网页2022年5月15日 · A report in the 4 January 2001 issue of Nature shows that RNA polymerase actually tracks around the double helix of DNA. In vitro, at least, when RNA polymerase is immobilized, it spins the DNA molecule around …
18.1: Transcription—from DNA to RNA - Biology LibreTexts
网页Once a gene is transcribed, the bacterial polymerase needs to be instructed to dissociate from the DNA template and liberate the newly made mRNA. Depending on the gene being transcribed, there are two kinds of termination signals. One …
DNA Transcription | Learn Science at Scitable - Nature
网页The process of transcription begins when an enzyme called RNA polymerase (RNA pol) attaches to the template DNA strand and begins to catalyze production of complementary RNA. Polymerases...
Organization and regulation of gene transcription | Nature
网页2019年8月28日 · Transcription is carried out by RNA polymerase enzymes, which catalyse the DNA-dependent synthesis of RNA (Box 1). To initiate transcription, RNA polymerase recognizes the promoter region...
Steps of Transcription From DNA to RNA - ThoughtCo
网页2024年8月26日 · One difference between DNA and RNA is that RNA uses uracil in place of the thymine used in DNA. RNA polymerase mediates the manufacture of an RNA strand that complements the DNA strand. RNA is synthesized in the 5' -> 3' direction (as seen from the growing RNA transcript).
Translation: DNA to mRNA to Protein | Learn Science at Scitable
网页Genes encode proteins, and the instructions for making proteins are decoded in two steps: first, a messenger RNA (mRNA) molecule is produced through the transcription of DNA, and next, the mRNA...
Eukaryotic RNA Polymerases: The Many Ways to Transcribe a Gene
网页2021年4月21日 · In eukaryotic cells, three nuclear RNA polymerases (RNA pols) carry out the transcription from DNA to RNA, and they all seem to have evolved from a single enzyme present in the common ancestor with archaea.
Khan Academy
网页DNA replication and RNA transcription and translation. Transcription and mRNA processing. Molecular structure of RNA. Overview of transcription. Stages of transcription. Eukaryotic pre-mRNA processing. Transcription. Science > Biology archive > Central dogma (DNA to RNA to protein) > Transcription
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