Textbook Question
Consider the amino acids lysine, valine, and aspartate in an enzyme. State which of these amino acids have R groups that would:
b. be found in hydrophilic regions
Ch.16 Amino Acids, Proteins, and Enzymes
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 16, Problem 80
If a blood test indicates a high level of ALT, what could be the cause?
Verified step by step guidance1
Understand the context: ALT stands for alanine aminotransferase, an enzyme found primarily in the liver. Elevated levels of ALT in the blood can indicate liver damage or disease.
Recognize the role of ALT: ALT is released into the bloodstream when liver cells are damaged. This makes it a useful biomarker for assessing liver health.
Identify potential causes: High levels of ALT can be caused by conditions such as hepatitis, fatty liver disease, alcohol-related liver damage, or the use of certain medications that affect the liver.
Consider other factors: Elevated ALT levels may also result from muscle damage or other non-liver-related conditions, though this is less common.
Consult a healthcare professional: A high ALT level is a signal to investigate further. A healthcare provider may order additional tests to determine the specific cause of the elevated ALT and recommend appropriate treatment or lifestyle changes.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
ALT (Alanine Aminotransferase)
ALT is an enzyme primarily found in the liver, and its levels in the blood can indicate liver health. Elevated ALT levels often suggest liver damage or inflammation, as the enzyme leaks into the bloodstream when liver cells are injured. Understanding ALT's role is crucial for interpreting blood test results related to liver function.
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Liver Function Tests (LFTs)
Liver function tests are a group of blood tests that assess the health of the liver by measuring the levels of various enzymes, proteins, and substances produced by the liver. These tests help diagnose liver diseases, monitor existing conditions, and evaluate the liver's ability to perform its functions. High ALT levels are one of the key indicators in these tests.
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Causes of Elevated ALT Levels
Elevated ALT levels can result from various conditions, including viral hepatitis, fatty liver disease, alcohol abuse, and certain medications. Identifying the underlying cause is essential for appropriate treatment and management. A comprehensive evaluation, including patient history and additional tests, is often necessary to determine the specific reason for the elevation.
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Related Practice
Textbook Question
Consider the amino acids lysine, valine, and aspartate in an enzyme. State which of these amino acids have R groups that would:
d. form salt bridges
Textbook Question
Give the substrate of each of the following enzymes:
a. maltase
Textbook Question
Consider the amino acids lysine, valine, and aspartate in an enzyme. State which of these amino acids have R groups that would:
c. form hydrogen bonds
Textbook Question
How would the lock-and-key model explain that sucrase hydrolyzes sucrose, but not lactose?
Textbook Question
Give the substrate of each of the following enzymes:
a. urease
1
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