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प्रश्न
Describe the term D- and L- configuration used for amino acids with examples.
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उत्तर
Amino acid exists both in D' and L' forms. Most naturally occurring amino acids have L-configuration L-Amino acids are represented by writing the –NH2 group on left-hand side and D-amino acids are represented by writing the –NH2 group on right-hand side.
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संबंधित प्रश्न
Define the following term:
Essential amino acids
The melting points and solubility in water of amino acids are generally higher than those of the corresponding halo acids. Explain.
What are amino acids?
Write the correct reaction for formation of the peptide bond between amino acids
Differentiable between the following:
Essential amino acids Non-essential amino acids
The number of tripeptides formed by 3 different amino acids.
Which amino acids are chiral?
Match the following:
| I | II |
| (i) Amino acids | (A) protein |
| (ii) Thymine | (B) Nucleic acid |
| (iii) Insulin | (C) DNA |
| (iv) phosphodiester linkage | (D) Zwitter ion |
Which of the following is the best matched options?
Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be ______.
Lysine, \[\begin{array}{cc}
\ce{H2N - (CH2)4 - CH - COOH}\\
\phantom{.....}|\\
\phantom{........}\ce{NH2}
\end{array}\] is:
(i) α-Amino acid
(ii) Basic amino acid
(iii) Amino acid synthesised in body
(iv) β-Amino acid
Amino acids can be classified as α–, β–, γ–, δ– and so on depending upon the relative position of amino group with respect to carboxyl group. Which type of amino acids form polypetide chain in proteins?
Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.
Which of the following compound can form a zwitterion?
The amino acid are the end product of the digestion of:-
X – Amino acid behave as crystalline ionic solid and have high melting-point due to the present of:-
Amino acid are least soluble in water.
Which of the following is a basic amino acid?
Why tryptophan is an essential amino acid?
