prefect (plural prefects) 1  An official of Ancient Rome who controlled or superintended a particular command, charge, department, etc. the prefect of the aqueducts; the prefect of a camp, of a fleet, of the city guard, or of provisions; the pretorian prefect, who was commander of the troops guarding the emperor's person.
peptide bond n. The chemical bond formed between the carboxyl groups and amino groups of neighboring amino acids, constituting the primary linkage of all protein structures. peptide bond. The chemical bond formed between amino acids, constituting the primary linkage in all protein structures. In a peptide bond, the carboxyl group (COOH) of one amino acid bonds with the amino group (NH2) of another, forming the sequence CONH and releasing water (H2O).
A protein is a peptide, but a peptide is not always a protein. As the article pointed out, a peptide with 50 or more amino acids is considered a protein. Anything less than that and it doesn't meet the protein qualification. covalent bond is a type of chemical bond that occurs when atoms share electrons. The specific type of covalent bond formed in these compounds is known as a peptide bond or amide bond, and it forms when the carboxl group of one amino acid attaches to another.