Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 13, Problem 7CONQ
Summary Introduction
To review:
The mRNA's different sequences, which can encode a peptide having the sequence proline-glycine-methionine-serine.
Introduction:
Peptides are the chains of monomers of amino acids, which are short and linked together with the help of peptide bonds. They are useful for carrying out an important biological function in the body. Peptides provide anti-aging benefits for skin care.
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Check out a sample textbook solutionStudents have asked these similar questions
Suppose that there is an unknown protein that underwent Edman sequencing method. From N-
terminal determination, a biochemist found out that there are two N-terminal amino acid residues,
V and G. What is the original sequence of the protein given the following peptide fragments:
after digestion with Chymotrypsin:
G-L-S-R-G-M-w
V-A-L-F
Q-L-Y
L-R-V-W
G-M-V-E-A-D-I-P
K-S-P-E-M-T-W
R-M-A-S-E-K-P-G-H
after digestion with Trypsin:
P-G-H
V-W-G-M-V-E-A-D-I-P
M-A-S-E-K
G-M-W-Q-L-Y-L-R
S-P-E-M-T-W-R
G-L-S-R
V-A-L-F-K
after digestion with Cyanogen Bromide:
T-W-R-M
W-Q-L-Y-L-R-V-W-G-M
V-E-A-D-I-P
A-S-E-K-P-G-H
V-A-L-F-K-S-P-E-M
G-L-S-R-G-M
Consider the following coding 71 nucleotide DNA template sequence (It does not contain a translational start):
5’- GTTTCCCCTATGCTTCATCACGAGGGCACTGACATGTGTAAACGAAATTCCAACCTGAGCGGCGT GTTGAG-3’
By in vitro translating the mRNA, you determined that the translated peptide is 15 amino acids long. What is the expected peptide sequence in single letter abbreviations?
Using the genetic code table provided below, write out the sequence of three different possible
mRNA sequences that could encode the following sequence of amino acids:
Met-Phe-Cys-Trp-Glu
C
A
G
U
C
UUU Phe UCU Ser
UUC Phe UCC Ser
UCA Ser
UUA Leu
UUG Leu UCG Ser
CUU Leu CCU Pro
CUC Leu
CUA Leu
CUG Leu CCG
A
CAU His CGU Arg
CCC Pro CAC His CGC Arg
UAU Tyr UGU Cys U
UAC Tyr UGC Cys C
Stop UGA Stop
Stop UGG
Trp
UAA
A
UAG
G
CCA Pro CAA Gln
Pro CAG
AUU lle
AUC lle
AUA lle
AUG Met ACG
G
등등
Gln
CGA Arg
CGG Arg
ACU Thr AAU Asn AGU Ser
ACC
AAC Asn
AGC Ser
Thr
ACA Thr
Thr
AAA Lys AGA Arg
AAG
Lys
AGG Arg
GUU Val GCU
Ala
GAU Asp
GGU Gly
GGC Gly
GUC Val GCC
Ala
GAC
Asp
GUA Val
GCA
Ala
GAA
Glu GGA Gly
GUG Val
GCG Ala GAG
Glu GGG Gly
U
C
A
G
U
C
A
G
SUAU
Chapter 13 Solutions
Genetics: Analysis and Principles
Ch. 13.1 - Prob. 1COMQCh. 13.1 - 2. The reason why Beadle and Tatum observed four...Ch. 13.2 - What is the genetic code? a. The relationship...Ch. 13.2 - Prob. 2COMQCh. 13.2 - The fourth codon in an mRNA sequence is GGG, which...Ch. 13.2 - Prob. 4COMQCh. 13.3 - Prob. 2COMQCh. 13.4 - Prob. 1COMQCh. 13.4 - 2. The anticodon of a tRNA is located in the
a....Ch. 13.4 - An enzyme known as _______attaches an amino acid...
Ch. 13.5 - Each ribosomal subunit is composed of a. multiple...Ch. 13.5 - Prob. 2COMQCh. 13.6 - 1. During the initiation stage of translation in...Ch. 13.6 - The Kozak rules determine a. the choice of the...Ch. 13.6 - During the peptidyl transfer reaction, the...Ch. 13.6 - A release factor is referred to as a molecular...Ch. 13 - Prob. 1CONQCh. 13 - What does it mean when we say that the genetic...Ch. 13 - According to the adaptor hypothesis, is each of...Ch. 13 - Prob. 4CONQCh. 13 - Prob. 5CONQCh. 13 - 6. The wobble rules for tRNA-mRNA pairing are...Ch. 13 - Prob. 7CONQCh. 13 - Prob. 8CONQCh. 13 - Prob. 9CONQCh. 13 - If a tRNA has an anticodon sequence 3CCI5, what...Ch. 13 - Describe the anticodon of a single tRNA that could...Ch. 13 - Prob. 12CONQCh. 13 - Prob. 13CONQCh. 13 - 14. What is the role of aminoacyl-tRNA synthetase?...Ch. 13 - Prob. 15CONQCh. 13 - 16. Discuss the significance of modified bases...Ch. 13 - How and when does formylmethionine become attached...Ch. 13 - Prob. 18CONQCh. 13 - Prob. 19CONQCh. 13 - Prob. 20CONQCh. 13 - The term subunit can be used in a variety of ways....Ch. 13 - 22. Do the following events during bacterial...Ch. 13 - 23. What are the three stages of translation?...Ch. 13 - Prob. 24CONQCh. 13 - 25. For each of the following initiation factors,...Ch. 13 - Prob. 26CONQCh. 13 - 27. For each of the following sequences, rank them...Ch. 13 - Prob. 28CONQCh. 13 - Prob. 29CONQCh. 13 - Prob. 30CONQCh. 13 - Prob. 31CONQCh. 13 - In which of the ribosomal sites, the A site, P...Ch. 13 - Prob. 33CONQCh. 13 - Prob. 34CONQCh. 13 - Prob. 35CONQCh. 13 - Prob. 36CONQCh. 13 - Prob. 37CONQCh. 13 - 1. In the experiment of Figure 13.7, what would be...Ch. 13 - 2. Polypeptides can be translated in vitro. Would...Ch. 13 - Discuss how the elucidation of the structure of...Ch. 13 - Describe the structure of a polysome, which is...Ch. 13 - Prob. 5EQCh. 13 - 6. The technique of Western blotting is described...Ch. 13 - The protein known as tyrosinase is needed to make...Ch. 13 - Prob. 8EQCh. 13 - Discuss why you think the ribosomes need to...Ch. 13 - 2. Discuss and make a list of the similarities...Ch. 13 - 3. Which events during translation involve...
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- A sample of a peptide of unknown sequencewas treated with trypsin; another sample of the same peptide wastreated with chymotrypsin. The sequences (N-terminal to C-terminal)of the smaller peptides produced by trypsin digestion were as follows:arrow_forwardList all possible codons present in a ribonucleotide polymer containing U and G in random sequence. Which amino acids are encoded by this RNA?arrow_forwardDraw and label the following RNA tetranucleotide: 5’phosphoryl-A-2’O-methyl-C-U-G-3’-phosphatearrow_forward
- Consider the following DNA sequence, which codes for a short polypeptide: 5'-ATGGGCTTAGCGTAGGTTAGT-3' Determine the mRNA transcript of this sequence. You have to write these sequences from the 5' end to the 3' end and indicate those ends as shown in the original sequence in order to get the full mark. How many amino acids will make up this polypeptide? Determine the first four anticodons that will be used in order to translate this sequence.arrow_forwardA sample of a peptide of unknown sequence was treated with trypsin; another sample of the same peptide was treated with chymotrypsin. The sequences (N-terminal to C-terminal) of the smaller peptides produced by trypsin digestion were as follows: Trp-Arg-Thr-Gin Ser-Trp-Arg-His-Trp-Ala-Lys Asp-Val-Ala-Ala-Lys Asn-Ser-Asn-Val-Ile-Arg The sequences of the smaller peptides produced by chymotrypsin digestion were as follows: Arg-His-Trp Arg-Thr-Gin Ala-Lys-Asn-Ser-Asn-Val-Ile-Arg-Trp Asp-Val-Ala-Ala-Lys-Ser-Trp The original peptide sequence was: Asp-Val-Ala-Ala-Lys-Ser-Trp-Ala-Lys-Asn-Ser-Asn-Val-Ile-Arg-Trp-Arg-His-Trp-Arg-Thr-Gin Asp-Val-Ala-Ala-Lys-Asn-Ser-Asn-Val-Ile-Arg-Trp-Arg-Thr-Gin-Ser-Trp-Arg-His-Trp-Ala-Lys Trp-Arg-Thr-Gin-Asn-Ser-Asn-Val-Ile-Arg-Ser-Trp-Arg-His-Trp-Ala-Lys-Asp-Val-Ala-Ala-Lys Arg-His-Trp-Arg-Thr-Gln-Ala-Lys-Asn-Ser-Asn-Val-Ile-Arg-Trp-Asp-Val-Ala-Ala-Lys-Ser-Trp Asp-Val-Ala-Ala-Lys-Ser-Trp-Arg-His-Trp-Ala-Lys-Asn-Ser-Asn-Val-Ile-Arg-Trp-Arg-Thr-Gin…arrow_forwardA normal hemoglobin protein has a glutamic acid at position 6; in sickle-cell hemoglobin, this glutamic acid has been replaced by a valine. List all the possible mRNA codons that could be present for each type of hemoglobin. Can a single base change result in a change from Glu to Val in hemoglobin?arrow_forward
- Using the codon given for each amino acid (Find the table yourself) write the base sequence of mRNA that would translate the synthesis of the following pentapeptide:Arg · Ile · Cys · Tyr · Valarrow_forwardFor the m-RNA nucleotide codons given below, what is the corresponding sequence of amino acids? AUG UGU AUA UAU GUA AUC ACC UUC UAU GUA ACA UUU UGG AAC AGC UGC CAU GUA UAC CAG AAA CUU GCA GAG CUG GCU UUG AUA UGA The α-helices are known to contain primarily the amino acids methionine, alanine, leucine, glutamate, and lysine, while β-pleated sheets are known to primarily contain the amino acids tryptophan, tyrosine, phenylalanine, isoleucine, valine, and threonine. Which one of these two types of secondary protein structure is present with this amino acid sequence?arrow_forwardConsider a short peptide that forms an alpha-helix within a larger protein structure. Suppose that one glutamate residue at some specific position in the helix were mutated to a leucine residue. The mutation could either make the helix more stable, or less stable. i) Describe two situations in which a Glu-to-Leu mutation could make the helix more stable. ii) Describe two situations in which the Glu-to-Leu mutation could make the helix less stable. Explain briefly the basis for the stabilizing and destabilizing effect in all cases.arrow_forward
- Using the codon given for each amino acid (Find the table yourself) write the base sequence of mRNA that would translate the synthesis of the following pentapeptide:Arg · Ile · Cys · Tyr · Vaarrow_forwardThere are different tRNAs for each amino acid. What is one major way to differentiate among the tRNAs for each amino acid?arrow_forwardThe following RNA sequence represents a small messenger which can be translated in a prokaryotic cell: 5'-ACGAAUGCACAGUAAAACUGGCUAGCGUAGGCUGA-3 Assume that the messenger RNA is translated in the cell, using the correct machinery and signals required for accurate protein synthesis. Using this RNA sequence and the Genetic Code Dictionary (see your textbook for the dictionary), solve the following problems A. Write the sequence of a protein that would be translated from this mRNA, using the appropriate stop and start signals, and indicating the correct termini of the protein product. B. Suppose that the underlined A in the sequence is changed to a U. Write the expected protein product of this mRNA.arrow_forward
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