👉 The term "phenylethylmalonylure" refers to a type of amino acid that is found in the human body, but not in the animal kingdom. This amino acid is called tyrosine and plays a crucial role in the production of proteins in the body. In humans, tyrosine is produced by a process known as tyrosine biosynthesis. It occurs during protein synthesis, where it serves as a building block for new proteins. The presence of tyrosine in