Question

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

Short answer

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

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)

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

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.

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.