Calculate what the maximum rate of translation by a ribosome in a bacterial cell would have to be, in units of amino acids per second, so as not to overtake an rna polymerase that is transcribing mrna at a rate of 60 nucleotides per second.

Question

Biology

Bella Mann

14 January, 15:10

Calculate what the maximum rate of translation by a ribosome in a bacterial cell would have to be, in units of amino acids per second, so as not to overtake an rna polymerase that is transcribing mrna at a rate of 60 nucleotides per second.

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Short Shorts · Answer 1

We have that DNA is transcribed into mRNA in a one to one fashion, namely one nucleotide of DNA is transcribed to 1 of mRNA. By the genetic code, we have that 3 nucleotides correspond to 1 amino acid. Hence, we have that if in a minute a polymerase transcribes 60 nucleotides, these correspond to 60/3 aminoacids. Hence, the rate has to be at most 20 aminoacids per minute.