Question

In: Biology

Does AUG occur only at the start of a protein?  How can a ribosome “know” which AUGs...

Does AUG occur only at the start of a protein?  How can a ribosome “know” which AUGs represent start codons? What is the actual link between the amino acid and the mRNA molecule? (IOW=What are the “translating” tools that translate RNA language into amino acid(protein) language?hint#2=there are 64 of them)

Solutions

Expert Solution

Yes, AUG is the start codon and it occurs always at the start and it codes for methionine.
Ribosomes will associate itself to the mRNA codon at the start of initiation stage of translation. And it will recognise start codon AUG that also encoded for amino acid methionine.
mRNA molecules are linked to the amino acid as protein are formed by the process of translation. And translation is defined as synthesis of protein from mRNA. Amino acids are building blocks of protein so we can say that amino acids are linked to mRNA.
Also, transfer RNA(tRNA) will form a link between mRNA codon and the corresponding amino acid which the mRNA will encode. tRNA has two ends where one end of tRNA consist of sequence of 3 nucleotides that will bind to the specific codon on mRNA and these sequence is called as anticodon. And another end of tRNA specifically carry the amino acid that is encoded by the mRNA codon.
The tools which are involved in translation are -
Ribosome is the molecule which is used to translate the mRNA into the protein having the sequence of amino acid which is very specific.
tRNA is the molecule which will bring the specific amino acid to the site of ribosome that is encoded by the codon on mRNA

stay safe?and for any query feel free to ask in the comment section. All the best and have a bright future.

gladiator answered 2 years ago
Next > < Previous

Related Solutions

Question 3a: Translation is another name for protein synthesis. How does the ribosome know that it...
Question 3a: Translation is another name for protein synthesis. How does the ribosome know that it should terminate translation? Describe briefly what happens to terminate translation. Question 3b: i) What does it mean when someone says that a mutation is cis-acting? ii) What would it mean if someone said that a mutation is trans-acting?
17) Protein synthesis could not occur without the mRNA, the ribosome, and tRNAs- which are RNA...
17) Protein synthesis could not occur without the mRNA, the ribosome, and tRNAs- which are RNA molecules that bring the ___________monomers of a growing protein to the ribosome and mRNA during the process of translation. A) Nucleotides B) Monosaccharides C) Nucleic Acids D) Amino Acids 18) During terminal differentiation multipotent stem cells become somatic tissue cells; if a somatic cells contains a proteome that is designed to create movement within an organ- it likely belongs to this tissue type: A)...
Describe how protein/DNA interactions occur. How does a protein bind to DNA? Are there different types...
Describe how protein/DNA interactions occur. How does a protein bind to DNA? Are there different types of DNA binding proteins? Can they be specific to a sequence in the DNA?
1. Can a protein begin to fold whole it is still being synthesized on the ribosome?...
1. Can a protein begin to fold whole it is still being synthesized on the ribosome? 2. With the TRP in E.coli encoding the components necessary for tryptophan biosynthesis. The amino acid is considered a co-repressor, so in the prescence of the amino acid( select all that apply): a. the operon genes are expressed b. the expression of the tryptophan repressor is shut off c. the tryptophan operator is bound to the t repressor d. the t repressor is bound...
A completed protein does not spontaneously fall off the ribosome when the termination codon is reached....
A completed protein does not spontaneously fall off the ribosome when the termination codon is reached. Instead, a release factor recognizes the termination codon in the A-site with one arm of the L-shape, and inserts a universally conserved GGQ (Gly-Gly-Gln) sequence at the tip of the other arm directly into the peptidyl transferase site. The peptidyl transferase center (PTC) positions the peptidyl-tRNA ester bond, while the GGQ sequence Choose best answer 1. collaborates with a universally conserved ribosomal protein to...
-Which organs produce digestive enzymes? Where does digestion occur? Where does digestion start? Where does most...
-Which organs produce digestive enzymes? Where does digestion occur? Where does digestion start? Where does most nutrient absorption occur? Where does most water reabsorption occur? How are fats absorbed into the body? What is the role of cholecystokinin? -Thinking back to earlier in the class: Be able to determine how pH and oxygen impact solute transport across the intestinal epithelium. How is transport of a solute impacted by concentration gradient? How could you determine if transport is dependent on sodium,...
What types of modifications can occur after a polypeptide chain has been completed by a ribosome?...
What types of modifications can occur after a polypeptide chain has been completed by a ribosome? (Choose as many that apply) A) Glycosylation B) Removal of methionine C) Hydrolysis D) Addition of amino acids E) Phosphorylation
What types of modifications can occur after a polypeptide chain has been completed by a ribosome?...
What types of modifications can occur after a polypeptide chain has been completed by a ribosome? (Choose as many that apply) A) Glycosylation B) Removal of methionine C) Hydrolysis D) Addition of amino acids E) Phosphorylation
How does FRET signaling work? Does the R0 value occur only when the enzyme efficiency is...
How does FRET signaling work? Does the R0 value occur only when the enzyme efficiency is at 50%? or 100%?
RNA provides the genetic blueprint to produce a protein at which cellular structure? nucleolus ribosome nucleus...
RNA provides the genetic blueprint to produce a protein at which cellular structure? nucleolus ribosome nucleus smooth endoplasmic reticulum Select ALL of the features that a plant cell has but an animal cell does not. nucleolus chloroplast vacuole Golgi apparatus centrioles cell wall Select ALL of the features that eukaryotic cells have but prokaryotic cells do not. DNA ribosome endoplasmic reticulum mitochondrion nucleus Select ALL of the functions of a cell wall of a plant. Cell walls provide the plant...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT