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प्रश्न
Write the structure of all possible dipeptides which can be obtained from glycine and alanine.
Give the structure of all the possible dipeptides formed when the following two amino acids form a peptide bond.
| Alanine |
 |
| Glycine |
 |
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उत्तर
\[\begin{array}{cc}
\ce{\underset{(Glycine)}{H2N - CH2 - COOH} + H2N - CH - COOH ->[-H2O] H2N - CH2 - CONH - CH - COOH}\\
\phantom{......................}|\phantom{...........................................}|\phantom{...}\\
\phantom{.........................}\ce{\underset{(Alanine)}{CH3}}\phantom{...................................}\ce{\underset{(Glycyl alanine)}{CH3}}\phantom{}
\end{array}\]
\[\begin{array}{cc}
\ce{H2N - CH - COOH + \underset{(Glycine)}{H2N - CH2 - COOH} ->[][-H2O] H2N - CH - CONH - CH2 - COOH}\\
\phantom{..}|\phantom{..................................................}|\phantom{.......................}\\
\phantom{}\ce{\underset{(Alanine)}{CH3}}\phantom{..........................................}\ce{\underset{(Alanyl glycine)}{CH3}}\phantom{................}
\end{array}\]
Therefore, two dipeptide structures are possible from glycine and alanine.
They are
- glycyl alanine and
- Alanyl glycine
संबंधित प्रश्न
Select the most correct choice.
A disulphide link gives rise to the following structure of a protein.
Give scientific reasons:
α-Amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.
Draw a neat diagram for the following:
Zwitter ion
Write the structure of Zwitterion of alanine.
Write types of proteins depending upon molecular shape.
Pyrimidines are ______.
Identify (i) and (ii) and select the correct option.
i. Protein portion of the enzyme is called the ____________.
ii. Non-protein constituent binding to the enzyme is called as the ____________.
The conjugate acid of \[\ce{CO^2-_3}\] is ____________.
Identify the enzyme that catalyses the reaction of CO2 with water in huma body.
The bacteriostatic antibiotic from the following is ______.
Which of the following amino acids has \[\ce{Me - S - CH2 - CH2 -}\] group in the side chain?
Identify basic amino acid from following.
Which among the following is a globular protein?
Among the following L-serine is:
Amino acids in a protein molecule, are linked by a peptide bond. Which of the following correctly shows the reaction of forming peptide bonds?
Write a short note on peptide bond.
Short Answer Question.
Write the Zwitter ion structure of alanine.
Given below are two statements.
Statement I- Most of the blood proteins are acidic proteins.
Statement II - Derived proteins are not found in nature.
In the light of above statements, Select the correct option given below.
The number of amino groups in the amino acids present in amides is ______.
