Domanda del libro di testo
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
390
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Ch.16 Amino Acids, Proteins, and Enzymes
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353
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TOC.tableOfContents
- Ch.1 Chemistry in Our Lives11
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy54
- Ch.4 Atoms and Elements51
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions41
- Ch.8 Gases29
- Ch.9 Solutions51
- Ch.10 Acids and Bases and Equilibrium65
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons78
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones83
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides90
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis83
- Ch.18 Metabolic Pathways and ATP Production67
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Non è quello che usi tu?Cambia libro di testo
Capitolo 16, Problema 82d
Consider the amino acids histidine, phenylalanine, and serine in an enzyme. State which of these amino acids have R groups that would:
d. form salt bridges
Guida verificata passo dopo passo1
Understand the concept of salt bridges: Salt bridges are ionic interactions that occur between oppositely charged groups in molecules, such as the side chains (R groups) of amino acids. These interactions typically involve a positively charged group (e.g., an amino group) and a negatively charged group (e.g., a carboxylate group).
Examine the R group of histidine: Histidine has an imidazole group in its side chain, which can gain a proton under physiological pH, making it positively charged. This allows histidine to participate in salt bridge formation with negatively charged groups.
Examine the R group of phenylalanine: Phenylalanine has a nonpolar benzyl group in its side chain. Since it is nonpolar and lacks a charge, it cannot form salt bridges.
Examine the R group of serine: Serine has a hydroxymethyl group (-CH2OH) in its side chain. This group is polar but uncharged, so serine cannot form salt bridges.
Conclude which amino acids can form salt bridges: Based on the analysis, histidine is the only amino acid among the three that has an R group capable of forming salt bridges due to its ability to carry a positive charge under physiological conditions.
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Amino Acid R Groups
Amino acids have unique side chains, known as R groups, that determine their properties and interactions. These R groups can be polar, nonpolar, acidic, or basic, influencing how amino acids behave in proteins. Understanding the nature of these R groups is essential for predicting how they will interact with each other and with the environment.
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Percorso guidato
2:21
Amino Acid Catabolism: Amino Group Concept 2
Salt Bridges
Salt bridges are non-covalent interactions that occur between positively and negatively charged R groups of amino acids. They play a crucial role in stabilizing protein structures and are particularly important in enzyme function. Identifying which amino acids can form salt bridges helps in understanding the overall stability and activity of the enzyme.
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Percorso guidato
00:50Ionic Salts
Enzyme Structure and Function
The structure of an enzyme is intricately linked to its function, with specific amino acids contributing to the active site and overall stability. The arrangement of R groups affects how substrates bind and how the enzyme catalyzes reactions. Recognizing the role of specific amino acids in enzyme activity is vital for comprehending biochemical processes.
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Percorso guidato
02:16Logarithmic Functions
Pratica correlata
Domanda del libro di testo
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
382
views
Domanda del libro di testo
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
427
views