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Which of the following is not true about the secondary conformation of proteins
- a)Secondary conformations arise from folding of backbone
- b)Random coils are most abundant secondary conformations
- c)Pi helix and 2.27 are alternate names of alpha helix
- d)Ramachandran plot explains the formation of peptide bond.
Correct answer is option 'A,C,D'. Can you explain this answer?
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Verified Answer
Which of the following is not true about the secondary conformation of...
(a) is coll ect as formation of a secondary structure is the first step in the folding process that a protein takes to assume its native structure, (b) is incorrect as the most common secondary structures are alpha helices and beta sheets, (c) is incorrect as pi helix (or π -helix) is believed to be an evolutionary adaptation derived by the insertion of a single amino acid into a α -helix and 2.27 and d is incorrect as a Ramachandran plot is a way to visualize backbone dihedral angles ψ against φ of amino acid residues in protein structure. A Ramachandran plot can be used in two somewhat different ways. One is to show in theory which values, or conformations, of the ψ and φ angles are possible for an amino-acid residue in a protein.
Most Upvoted Answer
Which of the following is not true about the secondary conformation of...
The correct answer is option A, C, D.
Explanation:
Secondary conformations arise from folding of backbone:
This statement is not true. Secondary conformations of proteins arise from the folding of the polypeptide chain backbone, not the entire protein structure. The folding of the backbone occurs due to hydrogen bonding interactions between the amino acid residues. These interactions lead to the formation of regular structures such as alpha helices and beta sheets, which are examples of secondary conformations.
Random coils are most abundant secondary conformations:
This statement is not true. Random coils are not considered secondary conformations of proteins. They are regions of the protein structure where the polypeptide chain does not adopt a regular secondary structure, such as alpha helix or beta sheet. Random coils are flexible and can adopt different conformations depending on the local environment.
Pi helix and 2.27 are alternate names of alpha helix:
This statement is not true. Pi helix and 2.27 are not alternate names of the alpha helix. The alpha helix is a common secondary structure in proteins, characterized by a right-handed helical conformation. The pi helix, on the other hand, is a less common secondary structure that is also helical but has a different hydrogen bonding pattern. The number 2.27 refers to the number of amino acid residues per turn in the alpha helix, which is a characteristic feature of this secondary conformation.
Ramachandran plot explains the formation of peptide bond:
This statement is not true. The Ramachandran plot is a graphical representation of the torsional angles phi (Φ) and psi (Ψ) of amino acid residues in a protein structure. It helps in understanding the allowed conformations of the peptide backbone. The plot provides information about the sterically allowed regions of the phi and psi angles, which are important for the stability and folding of the protein. However, it does not explain the formation of the peptide bond, which is a chemical bond between the carbonyl group of one amino acid and the amino group of another amino acid. The formation of the peptide bond involves a condensation reaction and is independent of the secondary conformation of the protein.
Explanation:
Secondary conformations arise from folding of backbone:
This statement is not true. Secondary conformations of proteins arise from the folding of the polypeptide chain backbone, not the entire protein structure. The folding of the backbone occurs due to hydrogen bonding interactions between the amino acid residues. These interactions lead to the formation of regular structures such as alpha helices and beta sheets, which are examples of secondary conformations.
Random coils are most abundant secondary conformations:
This statement is not true. Random coils are not considered secondary conformations of proteins. They are regions of the protein structure where the polypeptide chain does not adopt a regular secondary structure, such as alpha helix or beta sheet. Random coils are flexible and can adopt different conformations depending on the local environment.
Pi helix and 2.27 are alternate names of alpha helix:
This statement is not true. Pi helix and 2.27 are not alternate names of the alpha helix. The alpha helix is a common secondary structure in proteins, characterized by a right-handed helical conformation. The pi helix, on the other hand, is a less common secondary structure that is also helical but has a different hydrogen bonding pattern. The number 2.27 refers to the number of amino acid residues per turn in the alpha helix, which is a characteristic feature of this secondary conformation.
Ramachandran plot explains the formation of peptide bond:
This statement is not true. The Ramachandran plot is a graphical representation of the torsional angles phi (Φ) and psi (Ψ) of amino acid residues in a protein structure. It helps in understanding the allowed conformations of the peptide backbone. The plot provides information about the sterically allowed regions of the phi and psi angles, which are important for the stability and folding of the protein. However, it does not explain the formation of the peptide bond, which is a chemical bond between the carbonyl group of one amino acid and the amino group of another amino acid. The formation of the peptide bond involves a condensation reaction and is independent of the secondary conformation of the protein.
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Which of the following is not true about the secondary conformation of proteinsa)Secondary conformations arise from folding of backboneb)Random coils are most abundant secondary conformationsc)Pi helix and 2.27are alternate names of alpha helixd)Ramachandran plot explains the formation of peptide bond.Correct answer is option 'A,C,D'. Can you explain this answer?
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Which of the following is not true about the secondary conformation of proteinsa)Secondary conformations arise from folding of backboneb)Random coils are most abundant secondary conformationsc)Pi helix and 2.27are alternate names of alpha helixd)Ramachandran plot explains the formation of peptide bond.Correct answer is option 'A,C,D'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about Which of the following is not true about the secondary conformation of proteinsa)Secondary conformations arise from folding of backboneb)Random coils are most abundant secondary conformationsc)Pi helix and 2.27are alternate names of alpha helixd)Ramachandran plot explains the formation of peptide bond.Correct answer is option 'A,C,D'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is not true about the secondary conformation of proteinsa)Secondary conformations arise from folding of backboneb)Random coils are most abundant secondary conformationsc)Pi helix and 2.27are alternate names of alpha helixd)Ramachandran plot explains the formation of peptide bond.Correct answer is option 'A,C,D'. Can you explain this answer?.
Which of the following is not true about the secondary conformation of proteinsa)Secondary conformations arise from folding of backboneb)Random coils are most abundant secondary conformationsc)Pi helix and 2.27are alternate names of alpha helixd)Ramachandran plot explains the formation of peptide bond.Correct answer is option 'A,C,D'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about Which of the following is not true about the secondary conformation of proteinsa)Secondary conformations arise from folding of backboneb)Random coils are most abundant secondary conformationsc)Pi helix and 2.27are alternate names of alpha helixd)Ramachandran plot explains the formation of peptide bond.Correct answer is option 'A,C,D'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is not true about the secondary conformation of proteinsa)Secondary conformations arise from folding of backboneb)Random coils are most abundant secondary conformationsc)Pi helix and 2.27are alternate names of alpha helixd)Ramachandran plot explains the formation of peptide bond.Correct answer is option 'A,C,D'. Can you explain this answer?.
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