BIOCHEMISTRY
ENZYMES AND METABOLISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If a polypeptide contains just 4 amino acids, calculate how many different polypeptides can be created.
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420 = 1, 099, 511, 600, 000
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204 = 160, 000
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Explanation:
Detailed explanation-1: -Each group of three nucleotides encodes one amino acid. Since there are 64 combinations of 4 nucleotides taken three at a time and only 20 amino acids, the code is degenerate (more than one codon per amino acid, in most cases). The adaptor molecule for translation is tRNA.
Detailed explanation-2: -A tripeptide composed of three different amino acids can be made in 6 different constitutions, and the tetrapeptide shown above (composed of four different amino acids) would have 24 constitutional isomers.
Detailed explanation-3: -This means that for a protein with 2 amino acids there are
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