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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
What are non-essential amino acids? Give two examples.
What are amino acids?
Write the correct reaction for formation of the peptide bond between amino acids
What is the difference between acidic amino acids and basic amino acids?
Which amino acids are chiral?
Among the following a chiral amino acid is:
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?
Which of the following compound can form a zwitterion?
The amino acid are the end product of the digestion of:-
Amino acid are least soluble in water.
Which of the following X – amino acids is not optically active?
Proteins are condensation polymers of:
Why tryptophan is an essential amino acid?
