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Hemoglobin represents a commonly discussed tetramer that contains an even number of α and β subunits. Which of the following statements is true?
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- 1. A Review of General Chemistry6h 57m
- Orgo 1: Pre-Course Review25m
- What is Organic Chemistry?10m
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- 25. Condensation Chemistry2h 9m
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- Nomenclature of Heterocycles15m
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- Reactions of Pyrrole, Furan, and Thiophene13m
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- Disaccharide30m
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- 29. Amino Acids4h 16m
- Proteins and Amino Acids19m
- L and D Amino Acids14m
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- Amino Acid Chart1h 14m
- Acid-Base Properties of Amino Acids33m
- Isoelectric Point14m
- Amino Acid Synthesis: HVZ Method12m
- Synthesis of Amino Acids: Acetamidomalonic Ester Synthesis16m
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- Reactions of Amino Acids: Esterification7m
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- 30. Peptides and Proteins2h 42m
- Peptides12m
- Primary Protein Structure4m
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- Disulfide Bonds17m
- Quaternary Protein Structure10m
- Summary of Protein Structure7m
- Intro to Peptide Sequencing2m
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- Peptide Sequencing: Edman Degradation28m
- Merrifield Solid-Phase Peptide Synthesis18m
- 31. Catalysis in Organic Reactions1h 30m
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- 33. The Organic Chemistry of Metabolic Pathways2h 52m
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- Intro to Citric Acid Cycle7m
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- The Citric Acid Cycle35m
- 34. Nucleic Acids1h 32m
- 35. Transition Metals6h 14m
- Electron Configuration of Elements45m
- Coordination Complexes20m
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- The 18 and 16 Electron Rule13m
- Cross-Coupling General Reactions40m
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- 36. Synthetic Polymers1h 49m
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30. Peptides and Proteins
Quaternary Protein Structure
Scelta multipla
Which of the following could be classified as a prosthetic group?
A
I only
B
I, III, IV
C
II only
D
II, IV
E
None of the above
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Guida verificata passo dopo passo1
Understand the definition of a prosthetic group: A prosthetic group is a non-polypeptide unit that is tightly and permanently attached to a protein and is required for the biological activity of the protein.
Analyze the given options: Glycine (I) is an amino acid, Copper (IV) ion (II) is a metal ion, α-helix (III) is a secondary structure of proteins, and Ubiquinone (IV) is a coenzyme.
Determine which options can be prosthetic groups: Metal ions like Copper (II) can act as prosthetic groups in metalloproteins. Ubiquinone (IV) can also act as a prosthetic group as it is involved in electron transport chains.
Eliminate options that cannot be prosthetic groups: Glycine (I) is an amino acid and part of the protein structure itself, not a separate non-polypeptide unit. The α-helix (III) is a structural motif within proteins, not a separate entity.
Conclude that the correct options are II and IV, as they can function as prosthetic groups in biological systems.
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