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Chapter 25: Problem 58

Write a chemical equation for the formation of methionyl glycine from the constituent amino acids.

Short Answer

Expert verified
The chemical equation for the formation of methionyl glycine from methionine and glycine is: \(CH_3-S-(CH_2)_2-CH(NH_2)-COOH + NH_2-CH_2-COOH \rightarrow CH_3-S-(CH_2)_2-CH(NH_2)-CO-NH-CH_2-COOH + H_2O\)

Step by step solution

01

1. Identify the constituent amino acids

Firstly, we need to identify the constituent amino acids that constitute methionyl glycine. Those are: 1. Methionine (abbreviated as Met or M) 2. Glycine (abbreviated as Gly or G)
02

2. Write the structural formula for the constituent amino acids

Next, we need to write the structural formula for these amino acids. 1. Methionine: CH3-S-(CH2)_2-CH(NH2)-COOH 2. Glycine: NH2-CH2-COOH
03

3. Form the dipeptide by creating a peptide bond

To form the dipeptide methionyl glycine, we need to create a peptide bond between the carboxyl group (-COOH) of methionine and the amino group (-NH2) of glycine. In the process, a molecule of water will be released. The peptide bond is formed when the -OH of the carboxyl group of methionine and the H of the amino group of glycine are eliminated, creating a bond between the C of the methionine's carboxyl group and the N of glycine's amino group.
04

4. Write the chemical equation for the formation of methionyl glycine

Now we can write the chemical equation for the formation of methionyl glycine from methionine and glycine: CH3-S-(CH2)_2-CH(NH2)-COOH + NH2-CH2-COOH -> CH3-S-(CH2)_2-CH(NH2)-CO-NH-CH2-COOH + H2O In this chemical equation, methionine and glycine combine to form methionyl glycine, and a molecule of water is released as a by-product.

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Most popular questions from this chapter

The molar heat of combustion of gaseous cyclopropane is \(-2089 \mathrm{~kJ} / \mathrm{mol} ;\) that for gaseous cyclopentane is \(-3317 \mathrm{~kJ} / \mathrm{mol}\). Calculate the heat of combustion per \(\mathrm{CH}_{2}\) group in the two cases, and account for the difference.

(a) Give the empirical formula and structural formula for a cyclic ether containing four carbon atoms in the ring. (b) Write the structural formula for a straight-chain compound that is a structural isomer of your answer to part (a).

(a) What is an \(\alpha\) -amino acid? (b) How do amino acids react to form proteins? (c) Draw the bond that links amino acids together in proteins. What is this called?

Why is geometric isomerism possible for alkenes, but not for alkanes and alkynes?

What are the approximate bond angles (a) about carbon in an alkane, \((b)\) about a doubly bonded carbon atom in an alkene, (c) about a triply bonded carbon atom in an alkyne?
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