Protein. Each large egg contains 6.3 grams of complete protein -- protein with a balanced amino acid profile, that provides each of the amino acids you need in your diet. Your body uses amino acids -- the nutrients obtained from protein -- as building blocks to build new proteins, cells and tissues. The protein in one egg provides 12 percent of the daily protein requirements for an average 135-pound person, and 9 percent for an average 180-pound person.