Is L Tyrosine the same as L Lysine? L-lysine is an essential amino acid that must be obtained from food, and L-tyrosine is anonessentialamino acid that the body produces on its own from another amino acid called phenylalanine. ... A key difference between L-lysine and L-tyrosine is ess...
where the question asks you to recognize that when a tyrosine replaces alanine at the active site, the enzyme distorts enough to lose function. Perhaps you follow the passage, perhaps you even remember that alanine is small and nonpolar where tyrosine is massive with an OH group, but you we...