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प्रश्न
Differentiate between the following :
Peptide linkage and Glycosidic linkage
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उत्तर
| Peptide linkage | Glycosidic linkage |
| It is –CONH- a linkage that exists in proteins formed by condensation of amino acids. | It is –O–linkage. In disaccharide two monosaccharide units are joined through oxygen atom i.e. glycosidic linkage. |
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संबंधित प्रश्न
Discuss the optical activity of lactic acid.
Differentiate between the following:
Fibrous proteins and Globular proteins
Optical rotations of some compounds along with their structures are given below which of them have D configuration.
| (I) |  |
| (II) |  |
| (III) |  |
Proteins can be classified into two types on the basis of their molecular shape i.e., fibrous proteins and globular proteins. Examples of globular proteins are:
(i) Insulin
(ii) Keratin
(iii) Albumin
(iv) Myosin
In fibrous proteins, polypeptide chains are held together by:
(i) van der Waals forces
(ii) disulphide linkage
(iii) electrostatic forces of attraction
(iv) hydrogen bonds
Explain formation of peptide linkage in protein with an example.
The correct structure of Ruhemann's Purple, the compound formed in the reaction of ninhydrin with proteins is:
The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr at pH 12.5 will be ______. (Integer answers)
Assertion (A): Proteins are polymers of α-amino acids connected by a peptide bond.
Reason (R): A tetrapeptide contains 4 amino acids linked by 4 peptide bonds.
β-pleated sheet structure in proteins refers to ______.
