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Which of the following is not a polypeptide posttranslational modification? O Phosphorylation O Methylation O Acetylation O lonization

Which of the following is not a polypeptide posttranslational modification? O Phosphorylation O Methylation O Acetylation O lonization

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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**Which of the following is not a polypeptide posttranslational modification?** - Phosphorylation - Methylation - Acetylation - Ionization This question tests the knowledge of posttranslational modifications of polypeptides, which are crucial processes that proteins undergo after translation to achieve their mature form and functionality. Let's briefly discuss the options: 1. **Phosphorylation**: This is the addition of a phosphate group to a protein, often regulating the activity of the protein. 2. **Methylation**: This involves the addition of a methyl group, typically influencing the activity and function of proteins. 3. **Acetylation**: This includes adding an acetyl group, commonly to the amino group of a lysine residue in a protein, affecting the protein's function and stability. 4. **Ionization**: Unlike the other options, ionization refers to the process of gaining or losing electrons to form ions. This process is not typically a modification undergone by polypeptides post-translation.
Transcribed Image Text:**Which of the following is not a polypeptide posttranslational modification?** - Phosphorylation - Methylation - Acetylation - Ionization This question tests the knowledge of posttranslational modifications of polypeptides, which are crucial processes that proteins undergo after translation to achieve their mature form and functionality. Let's briefly discuss the options: 1. **Phosphorylation**: This is the addition of a phosphate group to a protein, often regulating the activity of the protein. 2. **Methylation**: This involves the addition of a methyl group, typically influencing the activity and function of proteins. 3. **Acetylation**: This includes adding an acetyl group, commonly to the amino group of a lysine residue in a protein, affecting the protein's function and stability. 4. **Ionization**: Unlike the other options, ionization refers to the process of gaining or losing electrons to form ions. This process is not typically a modification undergone by polypeptides post-translation.
The image presents a multiple-choice question related to molecular biology. Below is the transcribed content suitable for an educational website: --- ### Quiz Question: Protein Interactions with Biological Molecules **Question:** Proteins are able to bind to which of the following types of biological molecules? **Options:** - All are correct - Sugars - Nucleotides - Other proteins - Lipids --- In this question, students are asked to identify the types of biological molecules that proteins can bind to. The choices provided are: 1. **All are correct**: Suggests that proteins can bind to multiple types of molecules listed. 2. **Sugars**: Refers to carbohydrates like glucose or fructose. 3. **Nucleotides**: The building blocks of nucleic acids like DNA and RNA. 4. **Other proteins**: Refers to protein-protein interactions which are fundamental in many biological processes. 5. **Lipids**: Refers to fats and oils which are key components of cell membranes. ### Explanation - **Protein-Sugar Interactions**: Examples include glycoproteins, where proteins are covalently bonded to sugar molecules. - **Protein-Nucleotide Interactions**: Proteins often bind to nucleotides during processes like DNA replication and transcription. - **Protein-Protein Interactions**: Essential for cell signaling, structural functions, and complex formation. - **Protein-Lipid Interactions**: These are crucial for membrane protein functions and signaling pathways. This question tests the understanding of protein interactions within biological systems, a fundamental concept in biochemistry and molecular biology.
Transcribed Image Text:The image presents a multiple-choice question related to molecular biology. Below is the transcribed content suitable for an educational website: --- ### Quiz Question: Protein Interactions with Biological Molecules **Question:** Proteins are able to bind to which of the following types of biological molecules? **Options:** - All are correct - Sugars - Nucleotides - Other proteins - Lipids --- In this question, students are asked to identify the types of biological molecules that proteins can bind to. The choices provided are: 1. **All are correct**: Suggests that proteins can bind to multiple types of molecules listed. 2. **Sugars**: Refers to carbohydrates like glucose or fructose. 3. **Nucleotides**: The building blocks of nucleic acids like DNA and RNA. 4. **Other proteins**: Refers to protein-protein interactions which are fundamental in many biological processes. 5. **Lipids**: Refers to fats and oils which are key components of cell membranes. ### Explanation - **Protein-Sugar Interactions**: Examples include glycoproteins, where proteins are covalently bonded to sugar molecules. - **Protein-Nucleotide Interactions**: Proteins often bind to nucleotides during processes like DNA replication and transcription. - **Protein-Protein Interactions**: Essential for cell signaling, structural functions, and complex formation. - **Protein-Lipid Interactions**: These are crucial for membrane protein functions and signaling pathways. This question tests the understanding of protein interactions within biological systems, a fundamental concept in biochemistry and molecular biology.
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