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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

The base sequences in mRNA that code for certain amino acids are

Glu: GAA, GAG
Val: GUU, GUC, GUA, GUG
Met: AUG
Trp: UGG
Phe: UUU, UUC
Asp: GAU, GAC

These sequences are complementary to the sequences in DNA.

a. Give the corresponding sequences in DNA for the amino acids listed above.

b. Give a DNA sequence that would code for the peptide trp-glu-phe-met.

c. How many different DNA sequences can code for the tetrapeptide in part b?

d. What is the peptide that is produced from the DNA sequence T–A–C–C–T–G–A–A–G?

e. What other DNA sequences would yield the same tripeptide as in part d?

(a)

Interpretation Introduction

Interpretation:  The corresponding sequence in DNA for the given amino acid and the DNA sequences that code for the peptide, trp-glu-phe-met are to be stated. A different DNA sequence that can code for the tetrepeptide and tripeptide with the peptide that is produced is to be explained.

Concept introduction: A codon is defined as a sequence of three adjacent nucleotides which constitutes the genetic code that specifies the insertion of amino acid in a polypeptide. Tripeptide and tetrepeptide are composed of three or four peptides joined by peptide linkage. The given m-RNA base sequences are,

Glu: GAA, GAG

Val: GUU, GUC, GUA, GUG

Met: AUG

Trp: UGG

Phe: UUU, UUC

Asp: GAU, GAC

To determine: The corresponding sequence in DNA for the given amino acid.

Explanation

Explanation

The corresponding sequence in DNA for the given amino acid is shown below.

The four nucleotide bases of a DNA strand. These are guanine, thymine, cytosine and adenine. The nucleic acids base sequence can form a double stranded structure by matching base pairs with their complementary base sequence. Both the sequences are aligned antiparallel to each other. In DNA molecule, adenine (A) always pairs with thymine (T) and cytosine (C) always pairs with guanine (G) but in m-RNA adenine (A) always pairs with uracil (U) and cytosine (C) always pairs with guanine (G)...

(b)

Interpretation Introduction

Interpretation:  The corresponding sequence in DNA for the given amino acid and the DNA sequences that code for the peptide, trp-glu-phe-met are to be stated. A different DNA sequence that can code for the tetrepeptide and tripeptide with the peptide that is produced is to be explained.

Concept introduction: A codon is defined as a sequence of three adjacent nucleotides which constitutes the genetic code that specifies the insertion of amino acid in a polypeptide. Tripeptide and tetrepeptide are composed of three or four peptides joined by peptide linkage. The given m-RNA base sequences are,

Glu: GAA, GAG

Val: GUU, GUC, GUA, GUG

Met: AUG

Trp: UGG

Phe: UUU, UUC

Asp: GAU, GAC

To determine: The DNA sequences that code for the peptide, trp-glu-phe-met.

(c)

Interpretation Introduction

Interpretation:  The corresponding sequence in DNA for the given amino acid and the DNA sequences that code for the peptide, trp-glu-phe-met are to be stated. A different DNA sequence that can code for the tetrepeptide and tripeptide with the peptide that is produced is to be explained.

Concept introduction: A codon is defined as a sequence of three adjacent nucleotides which constitutes the genetic code that specifies the insertion of amino acid in a polypeptide. Tripeptide and tetrepeptide are composed of three or four peptides joined by peptide linkage. The given m-RNA base sequences are,

Glu: GAA, GAG

Val: GUU, GUC, GUA, GUG

Met: AUG

Trp: UGG

Phe: UUU, UUC

Asp: GAU, GAC

To determine: A different DNA sequences that can code for the tetrepeptide.

(d)

Interpretation Introduction

Interpretation:  The corresponding sequence in DNA for the given amino acid and the DNA sequences that code for the peptide, trp-glu-phe-met are to be stated. A different DNA sequence that can code for the tetrepeptide and tripeptide with the peptide that is produced is to be explained.

Concept introduction: A codon is defined as a sequence of three adjacent nucleotides which constitutes the genetic code that specifies the insertion of amino acid in a polypeptide. Tripeptide and tetrepeptide are composed of three or four peptides joined by peptide linkage. The given m-RNA base sequences are,

Glu: GAA, GAG

Val: GUU, GUC, GUA, GUG

Met: AUG

Trp: UGG

Phe: UUU, UUC

Asp: GAU, GAC

To determine: The peptide that is produced from the DNA sequences T-A-C-C-T-G-A-A-G.

(e)

Interpretation Introduction

Interpretation:  The corresponding sequence in DNA for the given amino acid and the DNA sequences that code for the peptide, trp-glu-phe-met are to be stated. A different DNA sequence that can code for the tetrepeptide and tripeptide with the peptide that is produced is to be explained.

Concept introduction: A codon is defined as a sequence of three adjacent nucleotides which constitutes the genetic code that specifies the insertion of amino acid in a polypeptide. Tripeptide and tetrepeptide are composed of three or four peptides joined by peptide linkage. The given m-RNA base sequences are,

Glu: GAA, GAG

Val: GUU, GUC, GUA, GUG

Met: AUG

Trp: UGG

Phe: UUU, UUC

Asp: GAU, GAC

To determine: The other DNA sequences to yield the same tripeptide as in part (d).

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Chapter 22 Solutions

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Ch-22 P-11RQCh-22 P-12RQCh-22 P-1QCh-22 P-2QCh-22 P-3QCh-22 P-4QCh-22 P-5QCh-22 P-6QCh-22 P-7QCh-22 P-8QCh-22 P-9QCh-22 P-10QCh-22 P-11QCh-22 P-12QCh-22 P-13ECh-22 P-14ECh-22 P-15ECh-22 P-16ECh-22 P-17ECh-22 P-18ECh-22 P-19ECh-22 P-20ECh-22 P-21ECh-22 P-22ECh-22 P-23ECh-22 P-24ECh-22 P-25ECh-22 P-26ECh-22 P-27ECh-22 P-28ECh-22 P-29ECh-22 P-30ECh-22 P-31ECh-22 P-32ECh-22 P-33ECh-22 P-34ECh-22 P-35ECh-22 P-36ECh-22 P-37ECh-22 P-38ECh-22 P-39ECh-22 P-40ECh-22 P-41ECh-22 P-42ECh-22 P-43ECh-22 P-44ECh-22 P-45ECh-22 P-46ECh-22 P-47ECh-22 P-48ECh-22 P-49ECh-22 P-50ECh-22 P-51ECh-22 P-52ECh-22 P-53ECh-22 P-54ECh-22 P-55ECh-22 P-56ECh-22 P-57ECh-22 P-58ECh-22 P-59ECh-22 P-60ECh-22 P-61ECh-22 P-62ECh-22 P-63ECh-22 P-64ECh-22 P-65ECh-22 P-66ECh-22 P-67ECh-22 P-68ECh-22 P-69ECh-22 P-70ECh-22 P-71ECh-22 P-72ECh-22 P-73ECh-22 P-74ECh-22 P-75ECh-22 P-76ECh-22 P-77ECh-22 P-78ECh-22 P-79ECh-22 P-80ECh-22 P-81ECh-22 P-82ECh-22 P-83ECh-22 P-84ECh-22 P-85ECh-22 P-86ECh-22 P-87ECh-22 P-88ECh-22 P-89ECh-22 P-90ECh-22 P-91ECh-22 P-92ECh-22 P-93ECh-22 P-94ECh-22 P-95ECh-22 P-96ECh-22 P-97ECh-22 P-98ECh-22 P-99ECh-22 P-100ECh-22 P-101ECh-22 P-102ECh-22 P-103ECh-22 P-104ECh-22 P-105ECh-22 P-106ECh-22 P-107ECh-22 P-108ECh-22 P-109ECh-22 P-110ECh-22 P-111AECh-22 P-112AECh-22 P-113AECh-22 P-114AECh-22 P-115AECh-22 P-116AECh-22 P-117AECh-22 P-118AECh-22 P-119AECh-22 P-120AECh-22 P-121AECh-22 P-122AECh-22 P-123AECh-22 P-124AECh-22 P-125AECh-22 P-126AECh-22 P-127AECh-22 P-128AECh-22 P-129AECh-22 P-130AECh-22 P-131AECh-22 P-132AECh-22 P-133AECh-22 P-134AECh-22 P-135AECh-22 P-136AECh-22 P-137CWPCh-22 P-138CWPCh-22 P-139CWPCh-22 P-140CWPCh-22 P-141CWPCh-22 P-142CWPCh-22 P-143CWPCh-22 P-144CWPCh-22 P-145CPCh-22 P-146CPCh-22 P-147CPCh-22 P-148CPCh-22 P-149CPCh-22 P-150CPCh-22 P-151CPCh-22 P-152CPCh-22 P-153CPCh-22 P-154CPCh-22 P-155CPCh-22 P-156CPCh-22 P-157CPCh-22 P-158CPCh-22 P-159IPCh-22 P-160IPCh-22 P-161MPCh-22 P-162MP

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