Textbook Question
Identify the amino acid for which the codon GAG codes, and what other codon could encode for this same amino acid?
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Ch.26 Nucleic Acids and Protein Synthesis
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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Table of contents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Not the one you use?Change textbook
Chapter 26, Problem 20
What amino acid sequence is coded for by the mRNA base sequence CUC-AUU-CCA-UGC-GAC-GUA?
Verified step by step guidance1
Identify the codons in the mRNA sequence. Each codon consists of three bases. The given sequence is already divided into codons: CUC, AUU, CCA, UGC, GAC, and GUA.
Use the genetic code table to determine the amino acid corresponding to each codon. For example, CUC codes for leucine (Leu), AUU codes for isoleucine (Ile), and so on.
Translate each codon into its corresponding amino acid using the genetic code: CUC -> Leu, AUU -> Ile, CCA -> Pro, UGC -> Cys, GAC -> Asp, GUA -> Val.
Write the amino acid sequence in the correct order as determined by the codons in the mRNA sequence.
Ensure that the sequence is written using the standard three-letter abbreviations for amino acids: Leu-Ile-Pro-Cys-Asp-Val.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
mRNA Translation
mRNA translation is the process by which ribosomes synthesize proteins based on the sequence of nucleotides in messenger RNA (mRNA). Each set of three nucleotides, known as a codon, corresponds to a specific amino acid. Understanding this process is crucial for determining the amino acid sequence encoded by a given mRNA sequence.
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1:42
Introduction to Translation Concept 1
Codons and Amino Acids
Codons are triplet sequences of nucleotides in mRNA that specify particular amino acids during protein synthesis. The genetic code is universal, meaning that the same codons correspond to the same amino acids across different organisms. Familiarity with the genetic code table is essential for translating mRNA sequences into their corresponding amino acid sequences.
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3:03Amino Acid Catabolism: Amino Group Example 2
Amino Acid Properties
Amino acids are the building blocks of proteins, each with unique properties that influence protein structure and function. There are 20 standard amino acids, and their sequence determines the protein's characteristics. Understanding the properties of these amino acids helps in predicting how the resulting protein will behave in biological systems.
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3:03Amino Acid Catabolism: Amino Group Example 2
Related Practice
Textbook Question
What amino acids do the following sequences code for?
a. AUC
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Textbook Question
Gln-His-Pro-Gly is the sequence of a molecule known as progenitor thyrotropin-releasing hormone (pro-TRH). If we were searching for pro-TRH genes, we would need to know what sequence of bases in DNA we should be looking for. Use the following boxes to indicate answers to parts (a)–(d).
a. What RNA sequence could code for these four amino acids?
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Textbook Question
Copy the following simplified drawing of a DNA replication fork:
a. On the drawing, indicate the direction of synthesis of the new strand labeled A and the location of DNA polymerase on the strand.
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Textbook Question
List possible codon sequences for the following amino acids.
a. Val
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Textbook Question
Copy the diagram and use dotted lines to indicate where hydrogen bonding occurs between the complementary strands of DNA. What is the sequence of each strand of DNA drawn (remember that the sequence is written from the 5′ to 3′ end)?
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