During initiation of translation: Question 6 options: both 70S and 30S ribosomal subunits must simultaneously recognize...

During initiation of translation:

Question 6 options:

	both 70S and 30S ribosomal subunits must simultaneously recognize an mRNA to bind.
	the initiator tRNAmet binds to the A site of a ribosome.
	IF-3 must be recruited to the 30S ribosome in order for the 70S initiation complex to assemble.
	specific rRNA base pairs with a sequence in mRNA to position a ribosome at the start codon.
	there is no energy expenditure as the tRNA binding to mRNA is via complementary base pairing.

Solutions

Expert Solution

During translation

Initiation involves binding of small ribosomal subunit (30s) to mRNA and then is joined by 50s subunit. They don't bind simultaneously

The initiated tRNA binds directly to the P site

IF3 binds to 30S subunit and prevents premature reassociation of the large and small subunits of the ribosome.

Ribosomal binding site called is a small polypurine sequence upstream of initiation codon and is complementary to a region at the 3'end of the 16s rRNA

During translation GTP is hydrolysed when 50s subunit joins with 30s subunit to generate a complete ribosome

gladiator answered 1 year ago

Next > < Previous

Related Solutions

Do the following events during bacterial translation occur primarily within the 30S subunit, within the 50S subunit, or at the interface between these two ribosomal subunits?

Do the following events during bacterial translation occur primarily within the 30S subunit, within the 50S subunit, or at the interface between these two ribosomal subunits?i) mRNA-tRNA recognitionii) Peptidyl transfer reactioniii) Exit of the polypeptide from the ribosomeiv) Binding of initiation factors IF1and IF3

During initiation of translation in eukaryotes the start codon must be correctly positioned in the P-site...

During initiation of translation in eukaryotes the start codon must be correctly positioned in the P-site in order to successfully start translation. One of the primary ways that this can occur is that the ribosome binds to the 5' cap and then scans along the mRNA until it encounters a start codon where the final ribosome, tRNA, mRNA complex can form. In some mRNA's, sequences in the 5' UTR can regulate translation by modulating the ability of the ribosome to...

Question 6 You must answer both A and B Ajay borrowed $10,000 from his employer, Creative...

Question 6 You must answer both A and B Ajay borrowed $10,000 from his employer, Creative College, on 4 September 2019 as his home was damaged by a hailstorm. The loan was provided at no interest. On 20 January 2020, the college informed Ajay that he was only required to repay half the loan as he is a valued employee. Required A (5+5=10 marks) Advise Ajay and the college: How the benefits would be characterised when determining Ajay’s assessable income...

Subjects