by Scientific Publications Division, Carolina Biological Supply Co. in Burlington, N.C .
Written in English
|Statement||A. A. Travers ; [drawings by Derek Whiteley].|
|Series||Carolina biology readers ; 75|
|LC Classifications||QH450.2 .T7 1978|
|The Physical Object|
|Pagination||16 p. :|
|Number of Pages||16|
|LC Control Number||76029378|
DNA serves as the template for the synthesis of RNA much as it does for its own replication. The Steps of Transcription Some 50 different protein transcription factors bind to promoter sites, usually on the 5′ side of the gene to be transcribed. An enzyme, an RNA polymerase, binds to the complex of transcription factors. DNA consists of the nitrogen bases adenine, guanine, cytosine and thymine. These bases are usually abbreviated as A, G, C and T, respectively. Just as in a book, these letters are grouped in a specific order to communicate a particular idea or task. Steps of Transcription. Transcription takes place in three steps: initiation, elongation, and termination. The steps are illustrated in the Figure below.. Initiation is the beginning of transcription. It occurs when the enzyme RNA polymerase binds to a region of a gene called the signals the DNA to unwind so the enzyme can ‘‘read’’ the bases in one of the DNA strands. Transcription is the process of copying information from DNA sequences into RNA sequences. This process is also known as DNA-dependent RNA synthesis. When a sequence of DNA is transcribed, only one of the two DNA strands is copied into RNA.
In transcription, only one strand of DNA is used as a template. First, the double helix of DNA unwinds and an enzyme, RNA Polymerase, builds the mRNA using the DNA as a template. The nucleotides follow basically the same base pairing rules as in DNA to form the correct sequence in the mRNA. This time, however, uracil (U) pairs with each adenine. The DNA sequence to which RNA polymerase binds to initiate transcription of a gene is called the promoter. The DNA sequences involved in promoter function were first identified by comparisons of the nucleotide sequences of a series of different genes isolated from by: 3. Transcription is a process by which cells are able to express their genes. It is through this that DNA is re-written into RNA (specifically mRNA), which may TeachMe/5. Transcription on the other hand is breezy and wry and thoroughly entertaining. A light hearted romp through the world of espionage in London during world war two/5.
Transcription is a spy novel by British novelist Kate Atkinson, published in September The novel focuses on the activities of British orphan Juliet Armstrong throughout World War II and afterwards, and how she begins a career as a low-level transcriptionist for MI5, before rising through the : Kate Atkinson. During transcription, only one strand of DNA is usually copied. This is called the template strand, and the RNA molecules produced are single-stranded messenger RNAs (mRNAs). The DNA strand that would correspond to the mRNA is called the coding or sense strand. Transcription means that the genetic informations stored in double-strande d DNA are copied or printed in the form of a single-str anded RNA molecule like mRNA, tRNA, rRNA . The. In DNA transcription, DNA is transcribed to produce RNA. The RNA transcript is then used to produce a protein. The RNA transcript is then used to produce a protein. The three main steps of transcription are initiation, elongation, and : Regina Bailey.