Question

Transamination of an amino acid transfers an amine group to form an α-keto acid and is catalyzed by transaminases. some amino acids can be transaminated into compounds that can be used directly in biological pathways, while other amino acids need to be converted through several steps. classify the amino acids into the following two categories.

Answer 1

Oxygen is small in size and the lone pairs on oxygen repel the bond pairs of O-O bond to larger extent than the lone pairs on sulphur in S-S bond.

The S-S bond energy 213 k J/mol therefore bond strength is more compared to O-O bond energy 138 k J/mol. Sulphur naturally