Initiation takes place with the binding of a ribosome to an mRNA transcript. Subscribe to view the full document. You should TERM. The ribosome binds to the mRNA molecule to start translation of its code into a protein.
The remaining exons are pasted together. Translation from RNA to Protein. Before the mRNA molecule leaves the nucleus and proceeds to protein synthesis, it is modified in a number of ways.
The tRNA is modified for this function. For example, your DNA, and thus complementary mRNA, contains long regions called non-coding regions that do not code for amino acids. The mechanism by which cells turn the DNA code into a protein product is a two-step process, with an RNA molecule as the intermediate.
The triplets within the gene on this section of the DNA molecule are used as the template to transcribe the complementary strand of RNA Figure 2. When completed, the mRNA detaches from the ribosome, and the protein is released. The Genetic Code. The mechanism by which cells turn the DNA code into a protein product is a two-step process, with an RNA molecule as the intermediate.
Similar to the way in which the three-letter code d-o-g signals the image of a dog, the three-letter DNA base code signals the use of a particular amino acid.
Like DNA replication, there are three stages to transcription: initiation, elongation, and termination. A gene is a functional segment of DNA that provides the genetic information necessary to build a protein. Interactive Link Questions Watch this video to learn about ribosomes. One of the most important classes of proteins is enzymes, which help speed up necessary biochemical reactions that take place inside the cell. Figure 2.
Use green marshmallows to represent adenine A , pink to represent thymine T , yellow to represent cytosine C , and orange to represent guanine. This increases the efficiency of protein synthesis. Translation from RNA to Protein. Similar to the way in which the three-letter code d-o-g signals the image of a dog, the three-letter DNA base code signals the use of a particular amino acid. The substrate on which translation takes place is the ribosome. In the nucleus, a structure called a spliceosome cuts out introns noncoding regions within a pre-mRNA transcript and reconnects the exons.
There are several different types of RNA, each having different functions in the cell. Once the anticodon and codon sequences are bound remember, they are complementary base pairs , the tRNA presents its amino acid cargo and the growing polypeptide strand is attached to this next amino acid.