Domanda del libro di testo
Indicate whether each of the following describes a competitive or a noncompetitive inhibitor.
a. The structure of the inhibitor is similar to that of the substrate.
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Ch.10 Proteins Workers of the Cell
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696
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TOC.tableOfContents
- Ch.4 Introduction to Organic Compounds75
- Ch.5 Chemical Reactions19
- Ch.6 Carbohydrates Life's Sweet Molecules62
- Ch.7 States of Matter and Their Attractive Forces8
- Ch.8 Solution Chemistry Sugar and Water Do Mix4
- Ch.10 Proteins Workers of the Cell89
- Ch.11 Nucleic Acids Big Molecules with a Big Role69
- Ch.12 Food as Fuel An Overview of Metabolism65
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Capitolo 6, Problema 50
What kind of interaction attracts the cofactor Mg2+ and ATP to each other? (Hint: Look at the structure of the phosphate group.)
Guida verificata passo dopo passo1
Examine the structure of ATP, specifically the phosphate groups. ATP contains three phosphate groups (α, β, and γ), which are negatively charged due to the presence of oxygen atoms bonded to phosphorus.
Understand the nature of Mg²⁺. Magnesium ions (Mg²⁺) are positively charged, making them attracted to negatively charged species through electrostatic interactions.
Identify the type of interaction. The attraction between the negatively charged phosphate groups of ATP and the positively charged Mg²⁺ ion is an ionic interaction, which is a type of electrostatic force.
Consider the role of Mg²⁺ as a cofactor. Mg²⁺ stabilizes the negative charges on the phosphate groups of ATP, making it easier for ATP to participate in biochemical reactions.
Conclude that the interaction between Mg²⁺ and ATP is primarily driven by ionic interactions, facilitated by the charge difference between the negatively charged phosphate groups and the positively charged Mg²⁺ ion.
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Cofactors in Biochemistry
Cofactors are non-protein chemical compounds that assist enzymes in catalyzing reactions. They can be metal ions, like Mg²⁺, or organic molecules. In the context of ATP, Mg²⁺ acts as a cofactor that stabilizes the negative charges on the phosphate groups, facilitating the transfer of energy during biochemical reactions.
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Percorso guidato
2:39
Intro to Cofactors Concept 1
Structure of ATP
Adenosine triphosphate (ATP) consists of an adenosine molecule bonded to three phosphate groups. The phosphate groups are negatively charged and repel each other, creating a high-energy state. The presence of Mg²⁺ helps to shield these negative charges, allowing ATP to interact more effectively with enzymes and other molecules.
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1:03Adenosine Triphosphate (ATP) Example 2
Ionic Interactions
Ionic interactions occur between charged particles, such as the positively charged Mg²⁺ and the negatively charged phosphate groups in ATP. These interactions are crucial for stabilizing the structure of ATP and facilitating its role in energy transfer within cells. The attraction between these opposite charges is fundamental to the biochemical processes involving ATP.
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02:33Ionic Bonding Concept 1
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