Domanda del libro di testo
For each of the conjugated proteins described, identify to which class of conjugated protein it belongs.
a. Cholesterol is attached to this protein in order to move through the blood system.
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Ch.18 Amino Acids and Proteins
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- 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: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 18, Problema 24
Consult the β-sheet in Figure 18.2 and (a) name the bonding responsible for the sheet formation and (b) identify the specific atoms responsible for this bonding.
Guida verificata passo dopo passo1
Step 1: Understand the structure of a β-sheet. A β-sheet is a common secondary structure in proteins, formed by the alignment of polypeptide chains in a sheet-like arrangement.
Step 2: Identify the type of bonding responsible for the formation of the β-sheet. The bonding involved is hydrogen bonding, which occurs between the backbone atoms of the polypeptide chains.
Step 3: Recognize the specific atoms involved in the hydrogen bonding. In a β-sheet, the hydrogen bonds form between the carbonyl oxygen (C=O) of one amino acid and the amide hydrogen (N-H) of another amino acid in a neighboring chain.
Step 4: Note the orientation of the β-sheet. The polypeptide chains can be arranged in either a parallel or antiparallel configuration, which affects the alignment of the hydrogen bonds.
Step 5: Summarize the findings. The bonding responsible for β-sheet formation is hydrogen bonding, and the specific atoms involved are the carbonyl oxygen and the amide hydrogen from the peptide backbone.
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Concetti chiave
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β-sheet Structure
The β-sheet is a common secondary structure in proteins, characterized by strands of amino acids linked together by hydrogen bonds. These strands can be parallel or antiparallel, influencing the overall stability and properties of the protein. Understanding the arrangement of these strands is crucial for grasping how proteins fold and function.
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Percorso guidato
2:42
Beta-Pleated Sheet Concept 4
Hydrogen Bonding
Hydrogen bonds are weak interactions that occur when a hydrogen atom covalently bonded to an electronegative atom, like oxygen or nitrogen, is attracted to another electronegative atom. In the context of β-sheets, these bonds form between the carbonyl oxygen of one amino acid and the amide hydrogen of another, stabilizing the sheet structure. This bonding is essential for maintaining the integrity of protein structures.
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1:22Hydrogenation Reactions Concept 1
Amino Acid Residues
Amino acid residues are the building blocks of proteins, each consisting of an amino group, a carboxyl group, and a unique side chain. In β-sheets, specific atoms from the backbone of these residues, particularly the carbonyl (C=O) and amide (N-H) groups, participate in hydrogen bonding. Identifying these residues is key to understanding the formation and stability of the β-sheet.
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3:03Amino Acid Catabolism: Amino Group Example 2
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How many ways can four different amino acids be arranged in a peptide so that each peptide is unique?
821
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Domanda del libro di testo
Examine the α-helix in Figure 18.1 and determine how many backbone C and N atoms are included in the loop between an amide hydrogen atom and the carbonyl oxygen to which it is hydrogen bonded.
875
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Domanda del libro di testo
For each of the conjugated proteins described, identify to which class of conjugated protein it belongs.
b. Ionized zinc is attached to this protein so the protein can function.
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Domanda del libro di testo
How many amino acid units do these atoms come from? Why are these units planar?
863
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Domanda del libro di testo
Complete the following two sentences with either globular or fibrous:
a. Proteins with secondary structure composed primarily of alpha-helix are___________ proteins.
517
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