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Which site on the ribosome does the new tRNA bring an amino acid to?
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∙ 12y ago
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∙ 12y ago
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What are the differences between a charged tRNA and an uncharged tRNA?
Well, charged tRNA means it has an amino acid attached. And a charged tRNA can read the codon of mRNA during translation.the charged tRNA mean that the correct amino acid is attached. uncharged means no amino acid is attached. mischarged means the wrong amino acid is attached. if the wrong amino acid is attached then there may be low levels which can cause misfolded proteins.
Which best summarizes the process of protein synthesis?
.........................This is what it is americans.................. 1. an mRNA molecule binds to the small ribosomal subunit at the mRNA biding site. A special tRNA, called initiator tRNA, binds to the start codon (AUG) on mRNA, where translation begins. The tRNA anticodon (UAC) attaches to the mRNA codon (AUG) by pairing between the complementary bases. Besides being the start codon, AUG is also the codon for the amino acid methionine. Thus, methionine is always the first amino acid in a growing polypeptide2. Next, the large ribosomal subunit attaches to the small ribosomal subunit-mRNA complex, creating a functional ribosome. The initiator tRNA, with its amino acid (methionine), fits into the P site of the ribosome.3. The anticodon of another tRNA with its attached amino acid pairs with the second mRNA codon at the A site of the ribosome.4. A component of the large ribosomal subunit catalyzes the formation of a peptide bond between methionine, which separates from its tRNA at the P site, and the amino acid carried by the tRNA at the A site.5. After peptide bond formation, the empty tRNA at the P site detaches from the ribosome, and the ribosome shifts the mRNA strand by one codon. The tRNA in the A site bearing the two-peptide protein shifts into the P site, allowing another tRNA with its amino acid to bind to a newly exposed codon at the A site. Steps 3 through 5 occur repeatedly, and the protein lengthens progressively.6. Protein synthesis ends when the ribosome reaches a stop codon at the A site, which causes the completed protein to detach from the final tRNA. When the tRNA vacates the A site, the ribosome splits into its large and small subunits.Read more: List_the_sequence_of_events_that_happens_during_protein_synthesis
What is rrna and what role does it play in protein synthesis?
Ribosomal ribonucleic acid (rRNA) is the RNA component of the ribosome, the enzyme that is the site of protein synthesis in all living cells. Ribosomal RNA provides a mechanism for decoding mRNA into amino acids and interacts with tRNAs during translation. The tRNAs bring the necessary amino acids corresponding to the appropriate mRNA codon.
Why is transfer RNA called transfer RNA?
Transfer Ribonucleic AcidtRNA is a nucleic acid that is involved in protein synthesis - specifically translation. When mRNA arrives in the cytoplasm, the large and small subunits of the ribosome come together and attach to the mRNA. The codons (three nitrogen bases of mRNA) are read and matched up with the anti-codons (complementary three bases to mRNA) of tRNA. Each codon codes for one amino acid, though one amino acid may code for many codons. The ribosome has three grooves which are holding sites for the tRNA. The first codon is AUG, called a "start codon". It also codes for the amino acid Met (methionine). So tRNA with the anti-codon sequence of UAC carrying the amino acid Met bonds to the mRNA codon. Another tRNA bonds to the next codon in the next groove with the next respective amino acid. Peptidyl transferase breaks the bond between the tRNA and the first amino acid and then reforms a peptide bond between the first amino acid and the second. This elongation process repeats until a long chain of amino acids is formed, creating a polypeptide. The tRNA exits the ribosome on the "E" site and returns to the cytoplasm. It will then pick up another of the same amino acid from the pool of amino acids stored in the cytoplasm and return to translation.In two dimensions, tRNA has three loops, one of which is the anti-codon. Opposite the anti-codon is the amino acid attachment site. In three dimensions, tRNA is "L" shaped; bent in the middle. See related links below for images.
What type of mutation in the DNA leads to a single change in the amino acid sequence of the protein?
Yes, it already has by changing the amino acid you have a mutation. That one amino acid counld be in the active site of an enzyme and that one amino acid being changed could result in loss of function or reduction in function of the enzyme. Sickle cell animea is caused by a single such amino acid substiution.
What happens to tRNA after it drops off its amino acid cargo at the ribosome?
tRNA will leave the ribosome site and return to the cytoplasm. It will then continue to pick up another of the same amino acid from the pool in the cell and continue to build the polypeptide.
How is trna charged?
tRNA is charged when an amino acid is bound to the 3' end of the molecule, the amino acid being bound is now able to enter the A site of the Ribosome.
In the process of translation which of the following performs the amino acid assembly?
I'm not sure what you mean by "Which of the Following," but I suppose ribosome would perform the Amino Acid Assembly.
Is tRNA attached to an amino acid?
Amino acids are attached to one end of the transfer RNA molecules and the other end of the tRNA moleule attaches to the a-site of the ribosome.
What are the differences between a charged tRNA and an uncharged tRNA?
Well, charged tRNA means it has an amino acid attached. And a charged tRNA can read the codon of mRNA during translation.the charged tRNA mean that the correct amino acid is attached. uncharged means no amino acid is attached. mischarged means the wrong amino acid is attached. if the wrong amino acid is attached then there may be low levels which can cause misfolded proteins.
What is the function of a ribosmes in a animal cell?
Ribosomes are the site of protein synthesis. After mRNA transcribes the DNA code, it moves to a ribosome where transfer RNA brings amino acids from the cytoplasm to the ribosome, and places the amino acid in the correct location according to the mRNA code.
What process is used to link amino acidstogether?
, Amino acids are linked together through the process of translation, the making of a protein. When translation occurs, mRNA recruits tRNA that has complementary amino acids to the ribosome. The tRNA goes through the three sites on the ribosome and the amino acids will be joined together by a peptide bond at the peptidyl-tRNA molecure site. As the tRNA reaches the terminal site it dispatches from the amino acid and takes off to find new corresponding amino acids, while the previous amino acid is joined to other amino acids by the peptide bonds, forming a protein altogether. Hope this helps.
Explain the process of translation and tRNA anticodons?
In short, translation is the process of ribosomes reading mRNA and using tRNA to gather the amino acids specified by the mRNA. The tRNA anticodons are complementary to the codons (three nucleotide sequence that represents an amino acid) on mRNA and allow them to be identified by the ribosome. In detail, translation is the second process of making a protein or polypeptide, the first being transcription. During translation, the mRNA leaves the nucleus and moves to the ribosome, usually located on the Rough ER (endoplasmic reticulum) or in the cytoplasm of the cell. The ribosome consists of two subunits, a large and small one. Initiation factors take the mRNA to the small ribosomal subunit, where other initiation factors move the tRNA to the first codon (three nucleotides sequence that represents a particular amino acid.) Then, the large ribosomal subunit attaches to the small subunit, encasing the mRNA and tRNA. The ribosome contains three distinct areas that the tRNA can occupy in the ribosome: the A site, where tRNA enters and receives the existing amino acid chain, the P site, where it comes in contact with the codons on the mRNA, and the E site, where the tRNA prepares to leave the ribosome. The first tRNA enters the P site and always carries N-formylmethionine (fMet), and all subsequent tRNAs enter the A site, then move to the P site then E site. Since tRNA is reusable and can only carry a particular amino acid, its possesses anticodons that represent the amino acid it carries. The first codon on mRNA is always a 'start' codon AUG (amino acid Methionine.) The ribosome moves down the mRNA and 'reads' each mRNA codon and finds the tRNA with the complementary anticodon (for example, if a codon on mRNA was GGG (Glycine), the complementary tRNA would have an anticodon of CCC and would be carrying the amino acid Glycine.) At the end of the mRNA, a stop signal is read by the ribosome and a release enters the A site instead of tRNA, prompting the ribosome to disassemble and be made available for more mRNA. The stop codons (also known as nonsense codons) are UAA, UAG, and UGA; they do not translate into any amino acid.
Which best summarizes the process of protein synthesis?
.........................This is what it is americans.................. 1. an mRNA molecule binds to the small ribosomal subunit at the mRNA biding site. A special tRNA, called initiator tRNA, binds to the start codon (AUG) on mRNA, where translation begins. The tRNA anticodon (UAC) attaches to the mRNA codon (AUG) by pairing between the complementary bases. Besides being the start codon, AUG is also the codon for the amino acid methionine. Thus, methionine is always the first amino acid in a growing polypeptide2. Next, the large ribosomal subunit attaches to the small ribosomal subunit-mRNA complex, creating a functional ribosome. The initiator tRNA, with its amino acid (methionine), fits into the P site of the ribosome.3. The anticodon of another tRNA with its attached amino acid pairs with the second mRNA codon at the A site of the ribosome.4. A component of the large ribosomal subunit catalyzes the formation of a peptide bond between methionine, which separates from its tRNA at the P site, and the amino acid carried by the tRNA at the A site.5. After peptide bond formation, the empty tRNA at the P site detaches from the ribosome, and the ribosome shifts the mRNA strand by one codon. The tRNA in the A site bearing the two-peptide protein shifts into the P site, allowing another tRNA with its amino acid to bind to a newly exposed codon at the A site. Steps 3 through 5 occur repeatedly, and the protein lengthens progressively.6. Protein synthesis ends when the ribosome reaches a stop codon at the A site, which causes the completed protein to detach from the final tRNA. When the tRNA vacates the A site, the ribosome splits into its large and small subunits.Read more: List_the_sequence_of_events_that_happens_during_protein_synthesis
How does amino acids get to the site of protein synthesis?
Amino acids are attached to transfer RNA to form an aminoacyl-tRNA and diffuse to the ribosome, which is the site of protein synthesis.
What is the primary site for amino acid uptake after a meal?
The liver is the organ that serves as the primary site of amino acid during metabolism.
What is the sequence of events that happens during protein synthesis?
this is what my anatomy & physiology book states...1. an mRNA molecule binds to the small ribosomal subunit at the mRNA biding site. A special tRNA, called initiator tRNA, binds to the start codon (AUG) on mRNA, where translation begins. The tRNA anticodon (UAC) attaches to the mRNA codon (AUG) by pairing between the complementary bases. Besides being the start codon, AUG is also the codon for the amino acid methionine. Thus, methionine is always the first amino acid in a growing polypeptide2. Next, the large ribosomal subunit attaches to the small ribosomal subunit-mRNA complex, creating a functional ribosome. The initiator tRNA, with its amino acid (methionine), fits into the P site of the ribosome.3. The anticodon of another tRNA with its attached amino acid pairs with the second mRNA codon at the A site of the ribosome.4. A component of the large ribosomal subunit catalyzes the formation of a peptide bond between methionine, which separates from its tRNA at the P site, and the amino acid carried by the tRNA at the A site.5. After peptide bond formation, the empty tRNA at the P site detaches from the ribosome, and the ribosome shifts the mRNA strand by one codon. The tRNA in the A site bearing the two-peptide protein shifts into the P site, allowing another tRNA with its amino acid to bind to a newly exposed codon at the A site. Steps 3 through 5 occur repeatedly, and the protein lengthens progressively.6. Protein synthesis ends when the ribosome reaches a stop codon at the A site, which causes the completed protein to detach from the final tRNA. When the tRNA vacates the A site, the ribosome splits into its large and small subunits.In your book (probably), the titles it gives are"1: Messenger RNA Production2: Messenger RNA Attaches to a Ribosome3: Transfer RNA Attaches to Messenger RNA4: Protein Production Continues
