Problem 25.1 A random-sequence polyribonucleotide produced by polynucleotide pho

Question

Problem 25.1

A random-sequence polyribonucleotide produced by polynucleotide phosphorylase, with CDP and ADP in a 5:1 molar ratio stimulated the incorporation of proline, histidine, threonine, glutamine, asparagine, and lysine in a cell-free translation system in the following proportions: 100, 23.4, 20, 3.3, 3.3, and 1.0, respectively.

Part A

What does this experiment reveal about the nucleotide composition of coding triplets for these six amino acids?

Select all that apply.

O CCC proline O 1C2A (AAC, ACA, CAA) -glutamine, histidine O 2C1A (CCA, CAC, ACC) -glutamine, asparagine AAA-proline 1C2A (AAC, ACA, CAA) - threonine, proline D CCC -lysine 1C2A (AAC, ACA, CAA) -glutamine, asparagine 1C2A (AAC, ACA, CAA) histidine, threonine O 2C1A (CCA, CAC, ACC) -glutamine, proline O 2C1A (CCA, CAC, ACC) threonine, proline D AAA- lysine O 2C1A (CCA, CAC, ACC)- histidine, threonine Submit Request Answer

Explanation / Answer

genetic code for amino acid

Proline: CCU CCC, CCA, CCG

histidine :CAU, CAC

threonine: ACU, ACC, ACA, ACG

glutamine: CAA, CAG

asparagine: AAU, AAC

lysine : AAA, AAG

therefore the Proline-CCC, Lysine -AAA reveal about the nucleotide composition of coding triplets for these six amino acids

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