BIOLOGY
AMINO ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following statements related to the Ramachandran plot is not true?
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Almost all peptide bonds in proteins are cis.
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The restriction of psi and phi angles limits structures accessible to unfolded form of proteins.
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A configuration that has
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Three quarters of possible phi and psi values are excluded by their steric clashes.
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Explanation:
Detailed explanation-1: -Peptides that are unstructured will have all the backbone dihedral angles in the. disallowed regions.
Detailed explanation-2: -Explanation: Glycine and proline are an exception to the Ramachandran plot.
Detailed explanation-3: -The Ramachandran plot shows the statistical distribution of the combinations of the backbone dihedral angles and . In theory, the allowed regions of the Ramachandran plot show which values of the Phi/Psi angles are possible for an amino acid, X, in a ala-X-ala tripeptide (Ramachandran et al., 1963).
Detailed explanation-4: -Updated On: 27-06-2022 Due to resonance, C-N bond length in proteins is smaller than usual bond length of C−N bond. Therefore, option (a) is incorrect.
There is 1 question to complete.